---
title: "Best David Grinspoon Quotes"
description: "David Grinspoon is an American astrobiologist who worked at NASA. Browse 103 David Grinspoon quotes."
image: "https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b002/author-david-grinspoon-5141.jpg"
---

![Portrait of David Grinspoon](https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b002/author-david-grinspoon-5141.jpg)

# David Grinspoon

(1959)   Astronomer

 **103** quotes in **335** categories

Rate this collection:  ★ ★ ★ ★ ★   No ratings yet

David Grinspoon is an astronomer.

## Quick Facts About David Grinspoon

Born January 1, 1959

Profession Astronomer

## About David Grinspoon

David H. Grinspoon served as NASA’s Senior Scientist for Astrobiology Strategy from 2023 to 2025. He was also the first Baruch S. Blumberg NASA/Library of Congress Chair in Astrobiology during 2012–2013.

##  Quotes by David Grinspoon · Page 2

> [Among the plausible niches for extraterrestrial life in our solar system, the clouds of Venus are among the most accessible and the…](https://sms4smile.com/quotes/david-grinspoon/among-the-plausible-niches-for-extraterrestrial-life-in-our-solar/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Image](https://sms4smile.com/quotes/i/1d7/david-grinspoon-5141_clouds_among-the-plausible-niches-for-extraterr_1508240.jpg)

> [The future peopling of Mars is much more than a scientific endeavor. It is a step of historic and spiritual importance for…](https://sms4smile.com/quotes/david-grinspoon/the-future-peopling-of-mars-is-much-more-than-a-scientific-endeavor/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Future](https://sms4smile.com/quotes/about/future/)

[Image](https://sms4smile.com/quotes/i/b41/david-grinspoon-5141_future_the-future-peopling-of-mars-is-much-more_2291919.jpg)

> [I think chemists always think they know more than they know, because nature has a lot of possible pathways it can try.](https://sms4smile.com/quotes/david-grinspoon/i-think-chemists-always-think-they-know-more-than-they-know-because/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Chemists](https://sms4smile.com/quotes/about/chemists/)

[Image](https://sms4smile.com/quotes/i/ca0/david-grinspoon-5141_chemists_i-think-chemists-always-think-they-know_2686484.jpg)

> [In order to have a decent chance to be a communicating species, you would have to learn to think and plan and…](https://sms4smile.com/quotes/david-grinspoon/in-order-to-have-a-decent-chance-to-be-a-communicating-species-you/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Chance](https://sms4smile.com/quotes/about/chance/)

[Image](https://sms4smile.com/quotes/i/070/david-grinspoon-5141_chance_in-order-to-have-a-decent-chance-to-be-a_571896.jpg)

> [Responsible global behaviour is ultimately an act of self-preservation of, by, and for the global beast that modern technological humanity has become.](https://sms4smile.com/quotes/david-grinspoon/responsible-global-behaviour-is-ultimately-an-act-of-self/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Beast](https://sms4smile.com/quotes/about/beast/)

[Image](https://sms4smile.com/quotes/i/c6e/david-grinspoon-5141_beast_responsible-global-behaviour-is-ultimate_228649.jpg)

> [I'd like to jump a couple hundred years into the future and work with the scientists who are getting back the first…](https://sms4smile.com/quotes/david-grinspoon/i-d-like-to-jump-a-couple-hundred-years-into-the-future-and-work-with/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Astronomy](https://sms4smile.com/quotes/about/astronomy/)

[Image](https://sms4smile.com/quotes/i/528/david-grinspoon-5141_astronomy_i-d-like-to-jump-a-couple-hundred-years_2359044.jpg)

> [Once we become a multiplanet species, our chances to live long and prosper will take a huge leap skyward.](https://sms4smile.com/quotes/david-grinspoon/once-we-become-a-multiplanet-species-our-chances-to-live-long-and/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Image](https://sms4smile.com/quotes/i/5a1/david-grinspoon-5141_chances_once-we-become-a-multiplanet-species-our_1960658.jpg)

> [Our most valuable resources - creativity, communication, invention, and reinvention - are, in fact, unlimited.](https://sms4smile.com/quotes/david-grinspoon/our-most-valuable-resources-creativity-communication-invention-and/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Communication](https://sms4smile.com/quotes/about/communication/)

[Image](https://sms4smile.com/quotes/i/fc5/david-grinspoon-5141_communication_our-most-valuable-resources-creativity-c_1009002.jpg)

> [I think a lot of people interested in space exploration tend to hear stories about the great missions, how they work technically,…](https://sms4smile.com/quotes/david-grinspoon/i-think-a-lot-of-people-interested-in-space-exploration-tend-to-hear/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Exploration](https://sms4smile.com/quotes/about/exploration/)

[Image](https://sms4smile.com/quotes/i/ea4/david-grinspoon-5141_goals_i-think-a-lot-of-people-interested-in-sp_1615406.jpg)

> [The reason you see so many volcanoes on Venus is partly due to the fact that there's virtually no erosion there. So…](https://sms4smile.com/quotes/david-grinspoon/the-reason-you-see-so-many-volcanoes-on-venus-is-partly-due-to-the/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Earth](https://sms4smile.com/quotes/about/earth/)

[Image](https://sms4smile.com/quotes/i/8a4/david-grinspoon-5141_earth_the-reason-you-see-so-many-volcanoes-on_1254482.jpg)

> [We definitely don't want to go through another Ice Age or another natural cycle of global warming. Both happen over a long…](https://sms4smile.com/quotes/david-grinspoon/we-definitely-don-t-want-to-go-through-another-ice-age-or-another/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Age](https://sms4smile.com/quotes/about/age/)

[Image](https://sms4smile.com/quotes/i/514/david-grinspoon-5141_age_we-definitely-don-t-want-to-go-through-a_1945874.jpg)

> [There is a real danger of unintended consequences, of encouraging people to give up. Pessimism, if it becomes a habit, can reinforce…](https://sms4smile.com/quotes/david-grinspoon/there-is-a-real-danger-of-unintended-consequences-of-encouraging/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Consequences](https://sms4smile.com/quotes/about/consequences/)

[Image](https://sms4smile.com/quotes/i/b5d/david-grinspoon-5141_consequences_there-is-a-real-danger-of-unintended-con_371158.jpg)

> [Titan has rivers and lakes of liquid methane and ethane, methane weather systems of clouds and storms that mirror Earth's hydrologic cycle,…](https://sms4smile.com/quotes/david-grinspoon/titan-has-rivers-and-lakes-of-liquid-methane-and-ethane-methane/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Image](https://sms4smile.com/quotes/i/4f1/david-grinspoon-5141_clouds_titan-has-rivers-and-lakes-of-liquid-met_2092895.jpg)

> [The more we look at the kinds of soils and the nature of the atmosphere and the polar caps, it all adds…](https://sms4smile.com/quotes/david-grinspoon/the-more-we-look-at-the-kinds-of-soils-and-the-nature-of-the/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Image](https://sms4smile.com/quotes/i/40a/david-grinspoon-5141_believe_the-more-we-look-at-the-kinds-of-soils-a_1515598.jpg)

> [We have to learn to become a new kind of entity on this world that has the maturity and the awareness to…](https://sms4smile.com/quotes/david-grinspoon/we-have-to-learn-to-become-a-new-kind-of-entity-on-this-world-that/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Awareness](https://sms4smile.com/quotes/about/awareness/)

[Image](https://sms4smile.com/quotes/i/de9/david-grinspoon-5141_awareness_we-have-to-learn-to-become-a-new-kind-of_456038.jpg)

> [We're pretty sure there's plenty of organic material on Pluto. The atmosphere is largely methane, and in sunlight, methane builds organic molecules.…](https://sms4smile.com/quotes/david-grinspoon/we-re-pretty-sure-there-s-plenty-of-organic-material-on-pluto-the/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Image](https://sms4smile.com/quotes/i/950/david-grinspoon-5141_atmosphere_we-re-pretty-sure-there-s-plenty-of-orga_2313863.jpg)

> [A lot of the science fiction that I grew up reading was written when we still thought that Venus might be an…](https://sms4smile.com/quotes/david-grinspoon/a-lot-of-the-science-fiction-that-i-grew-up-reading-was-written-when/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Fiction](https://sms4smile.com/quotes/about/fiction/)

[Image](https://sms4smile.com/quotes/i/359/david-grinspoon-5141_reading_a-lot-of-the-science-fiction-that-i-grew_1604963.jpg)

> [Whenever I see a nighttime picture of Earth from space, with its glowing lights, I am stirred by its beauty.](https://sms4smile.com/quotes/david-grinspoon/whenever-i-see-a-nighttime-picture-of-earth-from-space-with-its/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Beauty](https://sms4smile.com/quotes/about/beauty/)

[Image](https://sms4smile.com/quotes/i/2c7/david-grinspoon-5141_beauty_whenever-i-see-a-nighttime-picture-of-ea_1734739.jpg)

> [I don't see it as coincidence that the great acceleration of the Anthropocene influences on Earth came during the same decades as…](https://sms4smile.com/quotes/david-grinspoon/i-don-t-see-it-as-coincidence-that-the-great-acceleration-of-the/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Coincidence](https://sms4smile.com/quotes/about/coincidence/)

[Image](https://sms4smile.com/quotes/i/16b/david-grinspoon-5141_coincidence_i-don-t-see-it-as-coincidence-that-the-g_2767964.jpg)

> [I do a lot of work with NASA and am involved in research projects studying planetary evolution, Earth-like planets, and potential conditions…](https://sms4smile.com/quotes/david-grinspoon/i-do-a-lot-of-work-with-nasa-and-am-involved-in-research-projects/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Evolution](https://sms4smile.com/quotes/about/evolution/)

[Image](https://sms4smile.com/quotes/i/62b/david-grinspoon-5141_evolution_i-do-a-lot-of-work-with-nasa-and-am-invo_1555951.jpg)

> [My high-school friends and I felt part of a community of smart, forward-looking space and technology freaks.](https://sms4smile.com/quotes/david-grinspoon/my-high-school-friends-and-i-felt-part-of-a-community-of-smart/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Community](https://sms4smile.com/quotes/about/community/)

[Image](https://sms4smile.com/quotes/i/3a7/david-grinspoon-5141_community_my-high-school-friends-and-i-felt-part-o_2708425.jpg)

> [Humans are possessed, to some degree, with the power of foresight. Yet we so often learn things the hard way, through disaster.](https://sms4smile.com/quotes/david-grinspoon/humans-are-possessed-to-some-degree-with-the-power-of-foresight-yet/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Disaster](https://sms4smile.com/quotes/about/disaster/)

[Image](https://sms4smile.com/quotes/i/f19/david-grinspoon-5141_disaster_humans-are-possessed-to-some-degree-with_2864244.jpg)

> [It turns out one of my dad's best friends was Carl Sagan when I was little. They were both Harvard professors.](https://sms4smile.com/quotes/david-grinspoon/it-turns-out-one-of-my-dad-s-best-friends-was-carl-sagan-when-i-was/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Image](https://sms4smile.com/quotes/i/239/david-grinspoon-5141_best_it-turns-out-one-of-my-dad-s-best-friend_1753749.jpg)

> [I'm an astrobiologist, and I come from a planetary science background, so in a very broad sense, I study the evolution of…](https://sms4smile.com/quotes/david-grinspoon/i-m-an-astrobiologist-and-i-come-from-a-planetary-science-background/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Biology](https://sms4smile.com/quotes/about/biology/)

[Image](https://sms4smile.com/quotes/i/c45/david-grinspoon-5141_biology_i-m-an-astrobiologist-and-i-come-from-a_3227588.jpg)

> [As long as we can imagine a better path, of course we are obligated to seek it. This is why unwarranted pessimism…](https://sms4smile.com/quotes/david-grinspoon/as-long-as-we-can-imagine-a-better-path-of-course-we-are-obligated-to/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Image](https://sms4smile.com/quotes/i/826/david-grinspoon-5141_better_as-long-as-we-can-imagine-a-better-path_2538880.jpg)

> [Through space-based climate studies, my colleagues and I have learned that a stable and comfortable climate is not something to take for…](https://sms4smile.com/quotes/david-grinspoon/through-space-based-climate-studies-my-colleagues-and-i-have-learned/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Colleagues](https://sms4smile.com/quotes/about/colleagues/)

[Image](https://sms4smile.com/quotes/i/788/david-grinspoon-5141_colleagues_through-space-based-climate-studies-my-c_102862.jpg)

> [In environments that are energy-rich but liquid-poor, like near the surface of Titan, natural selection may favor organisms that use their metabolic…](https://sms4smile.com/quotes/david-grinspoon/in-environments-that-are-energy-rich-but-liquid-poor-like-near-the/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Biology](https://sms4smile.com/quotes/about/biology/)

[Image](https://sms4smile.com/quotes/i/400/david-grinspoon-5141_biology_in-environments-that-are-energy-rich-but_1456269.jpg)

> [There was a long history of people believing there was life on Venus. It was about the same size as Earth. It…](https://sms4smile.com/quotes/david-grinspoon/there-was-a-long-history-of-people-believing-there-was-life-on-venus/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Image](https://sms4smile.com/quotes/i/006/david-grinspoon-5141_clouds_there-was-a-long-history-of-people-belie_2759784.jpg)

> [I think the best SF writers are very aware of what we, in the scientific community, are doing, thinking, and discovering.](https://sms4smile.com/quotes/david-grinspoon/i-think-the-best-sf-writers-are-very-aware-of-what-we-in-the/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Image](https://sms4smile.com/quotes/i/4a5/david-grinspoon-5141_best_i-think-the-best-sf-writers-are-very-awa_9812.jpg)

> [Time and time again, our species has escaped existential threats by reinventing ourselves, finding new skills not coded in our genes to…](https://sms4smile.com/quotes/david-grinspoon/time-and-time-again-our-species-has-escaped-existential-threats-by/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Challenges](https://sms4smile.com/quotes/about/challenges/)

[Image](https://sms4smile.com/quotes/i/ee4/david-grinspoon-5141_challenges_time-and-time-again-our-species-has-esca_167110.jpg)

> [Seriously, we should start taxing churches and have tax-exempt places for worship and study of nature and art. Charge ten bucks for…](https://sms4smile.com/quotes/david-grinspoon/seriously-we-should-start-taxing-churches-and-have-tax-exempt-places/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Art](https://sms4smile.com/quotes/about/art/)

[Image](https://sms4smile.com/quotes/i/58f/david-grinspoon-5141_art_seriously-we-should-start-taxing-churche_2928707.jpg)

> [Venus and Mars are our next of kin: they are the two most Earth-like planets that we know about. They're the only…](https://sms4smile.com/quotes/david-grinspoon/venus-and-mars-are-our-next-of-kin-they-are-the-two-most-earth-like/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Mars](https://sms4smile.com/quotes/about/mars/)

[Image](https://sms4smile.com/quotes/i/05a/david-grinspoon-5141_mars_venus-and-mars-are-our-next-of-kin-they_291989.jpg)

> [We've almost been wiped out as a species many times, going back millions of years, and we've survived by reinventing ourselves and…](https://sms4smile.com/quotes/david-grinspoon/we-ve-almost-been-wiped-out-as-a-species-many-times-going-back/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Awareness](https://sms4smile.com/quotes/about/awareness/)

[Image](https://sms4smile.com/quotes/i/e7c/david-grinspoon-5141_awareness_we-ve-almost-been-wiped-out-as-a-species_1575206.jpg)

> [It will be a long time, if ever, before we get to study Earth-like planets orbiting around other stars, so really, the…](https://sms4smile.com/quotes/david-grinspoon/it-will-be-a-long-time-if-ever-before-we-get-to-study-earth-like/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Image](https://sms4smile.com/quotes/i/27a/david-grinspoon-5141_best_it-will-be-a-long-time-if-ever-before-we_1995114.jpg)

> [Thinking about the new epoch - often called the Anthropocene, or the age of humanity - challenges us to look at ourselves…](https://sms4smile.com/quotes/david-grinspoon/thinking-about-the-new-epoch-often-called-the-anthropocene-or-the-age/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Age](https://sms4smile.com/quotes/about/age/)

[Image](https://sms4smile.com/quotes/i/de3/david-grinspoon-5141_age_thinking-about-the-new-epoch-often-calle_530060.jpg)

> [I do comparative studies of climate evolution, and the interactions between planetary atmosphere and surfaces and their radiation environment, and try to…](https://sms4smile.com/quotes/david-grinspoon/i-do-comparative-studies-of-climate-evolution-and-the-interactions/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Change](https://sms4smile.com/quotes/about/change/)

[Image](https://sms4smile.com/quotes/i/a41/david-grinspoon-5141_change_i-do-comparative-studies-of-climate-evol_76975.jpg)

> [It's one of the big mysteries about Venus: How did it get so different from Earth when it seems likely to have…](https://sms4smile.com/quotes/david-grinspoon/it-s-one-of-the-big-mysteries-about-venus-how-did-it-get-so-different/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Astrobiology](https://sms4smile.com/quotes/about/astrobiology/)

[Image](https://sms4smile.com/quotes/i/ef2/david-grinspoon-5141_big_it-s-one-of-the-big-mysteries-about-venu_1054890.jpg)

> [Even as our unwitting alterations to Earth's carbon and hydrological cycles slowly make storms more damaging, our ability to monitor our planet…](https://sms4smile.com/quotes/david-grinspoon/even-as-our-unwitting-alterations-to-earth-s-carbon-and-hydrological/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Ability](https://sms4smile.com/quotes/about/ability/)

[Image](https://sms4smile.com/quotes/i/492/david-grinspoon-5141_ability_even-as-our-unwitting-alterations-to-ear_1922680.jpg)

> [Among the radio astronomers of SETI - the Search for Extraterrestrial Intelligence - it's only sort-of a joke that the true hallmark…](https://sms4smile.com/quotes/david-grinspoon/among-the-radio-astronomers-of-seti-the-search-for-extraterrestrial/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Astronomy](https://sms4smile.com/quotes/about/astronomy/)

[Image](https://sms4smile.com/quotes/i/527/david-grinspoon-5141_astronomy_among-the-radio-astronomers-of-seti-the_1855453.jpg)

> [In my Ph.D. thesis, written in 1989, I discussed the fact that when a civilization develops the technology to prevent catastrophic asteroid…](https://sms4smile.com/quotes/david-grinspoon/in-my-ph-d-thesis-written-in-1989-i-discussed-the-fact-that-when-a/)

[David Grinspoon](https://sms4smile.com/quotes/author/david-grinspoon/)

[Evolution](https://sms4smile.com/quotes/about/evolution/)

[Image](https://sms4smile.com/quotes/i/4d1/david-grinspoon-5141_evolution_in-my-ph-d-thesis-written-in-1989-i-disc_2427954.jpg)

## David Grinspoon by topic

[Earth (25)](https://sms4smile.com/quotes/about/earth/david-grinspoon/) [Space (21)](https://sms4smile.com/quotes/about/space/david-grinspoon/) [Life (17)](https://sms4smile.com/quotes/about/life/david-grinspoon/) [Time (16)](https://sms4smile.com/quotes/about/time/david-grinspoon/) [Science (16)](https://sms4smile.com/quotes/about/science/david-grinspoon/) [Nature of man (10)](https://sms4smile.com/quotes/about/nature-of-man/david-grinspoon/) [Nature (10)](https://sms4smile.com/quotes/about/nature/david-grinspoon/) [Future (10)](https://sms4smile.com/quotes/about/future/david-grinspoon/)

```json
{
    "@context": "https://schema.org",
    "@graph": [
        {
            "@type": "ItemList",
            "@id": "https://sms4smile.com/quotes/author/david-grinspoon/#itemlist",
            "name": "David Grinspoon Quotes",
            "numberOfItems": 40,
            "itemListElement": [
                {
                    "@type": "ListItem",
                    "position": 1,
                    "item": {
                        "@type": "Quotation",
                        "text": "Among the plausible niches for extraterrestrial life in our solar system, the clouds of Venus are among the most accessible and the least well explained.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/among-the-plausible-niches-for-extraterrestrial-life-in-our-solar/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/1d7/david-grinspoon-5141_clouds_among-the-plausible-niches-for-extraterr_1508240.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/1d7/david-grinspoon-5141_clouds_among-the-plausible-niches-for-extraterr_1508240.jpg",
                            "url": "https://sms4smile.com/quotes/i/1d7/david-grinspoon-5141_clouds_among-the-plausible-niches-for-extraterr_1508240.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Among the plausible niches for extraterrestrial life in our solar system, the clouds of Venus are among the…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 2,
                    "item": {
                        "@type": "Quotation",
                        "text": "The future peopling of Mars is much more than a scientific endeavor. It is a step of historic and spiritual importance for the human race.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/the-future-peopling-of-mars-is-much-more-than-a-scientific-endeavor/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/b41/david-grinspoon-5141_future_the-future-peopling-of-mars-is-much-more_2291919.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/b41/david-grinspoon-5141_future_the-future-peopling-of-mars-is-much-more_2291919.jpg",
                            "url": "https://sms4smile.com/quotes/i/b41/david-grinspoon-5141_future_the-future-peopling-of-mars-is-much-more_2291919.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“The future peopling of Mars is much more than a scientific endeavor. It is a step of historic and spiritual…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 3,
                    "item": {
                        "@type": "Quotation",
                        "text": "I think chemists always think they know more than they know, because nature has a lot of possible pathways it can try.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/i-think-chemists-always-think-they-know-more-than-they-know-because/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/ca0/david-grinspoon-5141_chemists_i-think-chemists-always-think-they-know_2686484.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/ca0/david-grinspoon-5141_chemists_i-think-chemists-always-think-they-know_2686484.jpg",
                            "url": "https://sms4smile.com/quotes/i/ca0/david-grinspoon-5141_chemists_i-think-chemists-always-think-they-know_2686484.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“I think chemists always think they know more than they know, because nature has a lot of possible pathways…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 4,
                    "item": {
                        "@type": "Quotation",
                        "text": "In order to have a decent chance to be a communicating species, you would have to learn to think and plan and act over time scales of a century or a millennium.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/in-order-to-have-a-decent-chance-to-be-a-communicating-species-you/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/070/david-grinspoon-5141_chance_in-order-to-have-a-decent-chance-to-be-a_571896.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/070/david-grinspoon-5141_chance_in-order-to-have-a-decent-chance-to-be-a_571896.jpg",
                            "url": "https://sms4smile.com/quotes/i/070/david-grinspoon-5141_chance_in-order-to-have-a-decent-chance-to-be-a_571896.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“In order to have a decent chance to be a communicating species, you would have to learn to think and plan…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 5,
                    "item": {
                        "@type": "Quotation",
                        "text": "Responsible global behaviour is ultimately an act of self-preservation of, by, and for the global beast that modern technological humanity has become.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/responsible-global-behaviour-is-ultimately-an-act-of-self/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/c6e/david-grinspoon-5141_beast_responsible-global-behaviour-is-ultimate_228649.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/c6e/david-grinspoon-5141_beast_responsible-global-behaviour-is-ultimate_228649.jpg",
                            "url": "https://sms4smile.com/quotes/i/c6e/david-grinspoon-5141_beast_responsible-global-behaviour-is-ultimate_228649.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Responsible global behaviour is ultimately an act of self-preservation of, by, and for the global beast that…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 6,
                    "item": {
                        "@type": "Quotation",
                        "text": "I'd like to jump a couple hundred years into the future and work with the scientists who are getting back the first information from our probes to planets orbiting nearby stars.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/i-d-like-to-jump-a-couple-hundred-years-into-the-future-and-work-with/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/528/david-grinspoon-5141_astronomy_i-d-like-to-jump-a-couple-hundred-years_2359044.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/528/david-grinspoon-5141_astronomy_i-d-like-to-jump-a-couple-hundred-years_2359044.jpg",
                            "url": "https://sms4smile.com/quotes/i/528/david-grinspoon-5141_astronomy_i-d-like-to-jump-a-couple-hundred-years_2359044.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“I'd like to jump a couple hundred years into the future and work with the scientists who are getting back…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 7,
                    "item": {
                        "@type": "Quotation",
                        "text": "Once we become a multiplanet species, our chances to live long and prosper will take a huge leap skyward.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/once-we-become-a-multiplanet-species-our-chances-to-live-long-and/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/5a1/david-grinspoon-5141_chances_once-we-become-a-multiplanet-species-our_1960658.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/5a1/david-grinspoon-5141_chances_once-we-become-a-multiplanet-species-our_1960658.jpg",
                            "url": "https://sms4smile.com/quotes/i/5a1/david-grinspoon-5141_chances_once-we-become-a-multiplanet-species-our_1960658.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Once we become a multiplanet species, our chances to live long and prosper will take a huge leap skyward.” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 8,
                    "item": {
                        "@type": "Quotation",
                        "text": "Our most valuable resources - creativity, communication, invention, and reinvention - are, in fact, unlimited.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/our-most-valuable-resources-creativity-communication-invention-and/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/fc5/david-grinspoon-5141_communication_our-most-valuable-resources-creativity-c_1009002.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/fc5/david-grinspoon-5141_communication_our-most-valuable-resources-creativity-c_1009002.jpg",
                            "url": "https://sms4smile.com/quotes/i/fc5/david-grinspoon-5141_communication_our-most-valuable-resources-creativity-c_1009002.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Our most valuable resources - creativity, communication, invention, and reinvention - are, in fact, unlimited.” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 9,
                    "item": {
                        "@type": "Quotation",
                        "text": "I think a lot of people interested in space exploration tend to hear stories about the great missions, how they work technically, what we learned. But they don't really hear the story of what it takes to get a mission from scratch to the launch pad and into space.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/i-think-a-lot-of-people-interested-in-space-exploration-tend-to-hear/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/ea4/david-grinspoon-5141_goals_i-think-a-lot-of-people-interested-in-sp_1615406.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/ea4/david-grinspoon-5141_goals_i-think-a-lot-of-people-interested-in-sp_1615406.jpg",
                            "url": "https://sms4smile.com/quotes/i/ea4/david-grinspoon-5141_goals_i-think-a-lot-of-people-interested-in-sp_1615406.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“I think a lot of people interested in space exploration tend to hear stories about the great missions, how…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 10,
                    "item": {
                        "@type": "Quotation",
                        "text": "The reason you see so many volcanoes on Venus is partly due to the fact that there's virtually no erosion there. So on Venus, you're seeing features, some of which are hundreds of millions of years old on the surface. On Earth, we do not see any surface features nearly that old - you only see much more recent features.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/the-reason-you-see-so-many-volcanoes-on-venus-is-partly-due-to-the/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/8a4/david-grinspoon-5141_earth_the-reason-you-see-so-many-volcanoes-on_1254482.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/8a4/david-grinspoon-5141_earth_the-reason-you-see-so-many-volcanoes-on_1254482.jpg",
                            "url": "https://sms4smile.com/quotes/i/8a4/david-grinspoon-5141_earth_the-reason-you-see-so-many-volcanoes-on_1254482.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“The reason you see so many volcanoes on Venus is partly due to the fact that there's virtually no erosion…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 11,
                    "item": {
                        "@type": "Quotation",
                        "text": "We definitely don't want to go through another Ice Age or another natural cycle of global warming. Both happen over a long period of time. It would be disastrous for our civilization, and not just for us but many other species.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/we-definitely-don-t-want-to-go-through-another-ice-age-or-another/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/514/david-grinspoon-5141_age_we-definitely-don-t-want-to-go-through-a_1945874.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/514/david-grinspoon-5141_age_we-definitely-don-t-want-to-go-through-a_1945874.jpg",
                            "url": "https://sms4smile.com/quotes/i/514/david-grinspoon-5141_age_we-definitely-don-t-want-to-go-through-a_1945874.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“We definitely don't want to go through another Ice Age or another natural cycle of global warming. Both…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 12,
                    "item": {
                        "@type": "Quotation",
                        "text": "There is a real danger of unintended consequences, of encouraging people to give up. Pessimism, if it becomes a habit, can reinforce a narrative of unstoppable decline. If there is nothing we can do, that releases us from our obligations.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/there-is-a-real-danger-of-unintended-consequences-of-encouraging/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/b5d/david-grinspoon-5141_consequences_there-is-a-real-danger-of-unintended-con_371158.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/b5d/david-grinspoon-5141_consequences_there-is-a-real-danger-of-unintended-con_371158.jpg",
                            "url": "https://sms4smile.com/quotes/i/b5d/david-grinspoon-5141_consequences_there-is-a-real-danger-of-unintended-con_371158.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“There is a real danger of unintended consequences, of encouraging people to give up. Pessimism, if it…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 13,
                    "item": {
                        "@type": "Quotation",
                        "text": "Titan has rivers and lakes of liquid methane and ethane, methane weather systems of clouds and storms that mirror Earth's hydrologic cycle, and seasonal cycles that rival Earth's in complexity.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/titan-has-rivers-and-lakes-of-liquid-methane-and-ethane-methane/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/4f1/david-grinspoon-5141_clouds_titan-has-rivers-and-lakes-of-liquid-met_2092895.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/4f1/david-grinspoon-5141_clouds_titan-has-rivers-and-lakes-of-liquid-met_2092895.jpg",
                            "url": "https://sms4smile.com/quotes/i/4f1/david-grinspoon-5141_clouds_titan-has-rivers-and-lakes-of-liquid-met_2092895.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Titan has rivers and lakes of liquid methane and ethane, methane weather systems of clouds and storms that…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 14,
                    "item": {
                        "@type": "Quotation",
                        "text": "The more we look at the kinds of soils and the nature of the atmosphere and the polar caps, it all adds up to tell us that some liquid, which we very much believe was water, did flow in abundance on Mars in the past.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/the-more-we-look-at-the-kinds-of-soils-and-the-nature-of-the/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/40a/david-grinspoon-5141_believe_the-more-we-look-at-the-kinds-of-soils-a_1515598.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/40a/david-grinspoon-5141_believe_the-more-we-look-at-the-kinds-of-soils-a_1515598.jpg",
                            "url": "https://sms4smile.com/quotes/i/40a/david-grinspoon-5141_believe_the-more-we-look-at-the-kinds-of-soils-a_1515598.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“The more we look at the kinds of soils and the nature of the atmosphere and the polar caps, it all adds up…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 15,
                    "item": {
                        "@type": "Quotation",
                        "text": "We have to learn to become a new kind of entity on this world that has the maturity and the awareness to handle being a global species with the power to change our planet and use that power in a way that is conducive to the kind of global society we want to have.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/we-have-to-learn-to-become-a-new-kind-of-entity-on-this-world-that/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/de9/david-grinspoon-5141_awareness_we-have-to-learn-to-become-a-new-kind-of_456038.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/de9/david-grinspoon-5141_awareness_we-have-to-learn-to-become-a-new-kind-of_456038.jpg",
                            "url": "https://sms4smile.com/quotes/i/de9/david-grinspoon-5141_awareness_we-have-to-learn-to-become-a-new-kind-of_456038.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“We have to learn to become a new kind of entity on this world that has the maturity and the awareness to…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 16,
                    "item": {
                        "@type": "Quotation",
                        "text": "We're pretty sure there's plenty of organic material on Pluto. The atmosphere is largely methane, and in sunlight, methane builds organic molecules. We see reddish stuff on the surface that we think is organic material.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/we-re-pretty-sure-there-s-plenty-of-organic-material-on-pluto-the/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/950/david-grinspoon-5141_atmosphere_we-re-pretty-sure-there-s-plenty-of-orga_2313863.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/950/david-grinspoon-5141_atmosphere_we-re-pretty-sure-there-s-plenty-of-orga_2313863.jpg",
                            "url": "https://sms4smile.com/quotes/i/950/david-grinspoon-5141_atmosphere_we-re-pretty-sure-there-s-plenty-of-orga_2313863.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“We're pretty sure there's plenty of organic material on Pluto. The atmosphere is largely methane, and in…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 17,
                    "item": {
                        "@type": "Quotation",
                        "text": "A lot of the science fiction that I grew up reading was written when we still thought that Venus might be an oceanic planet.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/a-lot-of-the-science-fiction-that-i-grew-up-reading-was-written-when/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/359/david-grinspoon-5141_reading_a-lot-of-the-science-fiction-that-i-grew_1604963.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/359/david-grinspoon-5141_reading_a-lot-of-the-science-fiction-that-i-grew_1604963.jpg",
                            "url": "https://sms4smile.com/quotes/i/359/david-grinspoon-5141_reading_a-lot-of-the-science-fiction-that-i-grew_1604963.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“A lot of the science fiction that I grew up reading was written when we still thought that Venus might be an…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 18,
                    "item": {
                        "@type": "Quotation",
                        "text": "Whenever I see a nighttime picture of Earth from space, with its glowing lights, I am stirred by its beauty.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/whenever-i-see-a-nighttime-picture-of-earth-from-space-with-its/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/2c7/david-grinspoon-5141_beauty_whenever-i-see-a-nighttime-picture-of-ea_1734739.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/2c7/david-grinspoon-5141_beauty_whenever-i-see-a-nighttime-picture-of-ea_1734739.jpg",
                            "url": "https://sms4smile.com/quotes/i/2c7/david-grinspoon-5141_beauty_whenever-i-see-a-nighttime-picture-of-ea_1734739.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Whenever I see a nighttime picture of Earth from space, with its glowing lights, I am stirred by its beauty.” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 19,
                    "item": {
                        "@type": "Quotation",
                        "text": "I don't see it as coincidence that the great acceleration of the Anthropocene influences on Earth came during the same decades as our first exploration of the other planets.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/i-don-t-see-it-as-coincidence-that-the-great-acceleration-of-the/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/16b/david-grinspoon-5141_coincidence_i-don-t-see-it-as-coincidence-that-the-g_2767964.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/16b/david-grinspoon-5141_coincidence_i-don-t-see-it-as-coincidence-that-the-g_2767964.jpg",
                            "url": "https://sms4smile.com/quotes/i/16b/david-grinspoon-5141_coincidence_i-don-t-see-it-as-coincidence-that-the-g_2767964.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“I don't see it as coincidence that the great acceleration of the Anthropocene influences on Earth came…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 20,
                    "item": {
                        "@type": "Quotation",
                        "text": "I do a lot of work with NASA and am involved in research projects studying planetary evolution, Earth-like planets, and potential conditions for life elsewhere.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/i-do-a-lot-of-work-with-nasa-and-am-involved-in-research-projects/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/62b/david-grinspoon-5141_evolution_i-do-a-lot-of-work-with-nasa-and-am-invo_1555951.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/62b/david-grinspoon-5141_evolution_i-do-a-lot-of-work-with-nasa-and-am-invo_1555951.jpg",
                            "url": "https://sms4smile.com/quotes/i/62b/david-grinspoon-5141_evolution_i-do-a-lot-of-work-with-nasa-and-am-invo_1555951.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“I do a lot of work with NASA and am involved in research projects studying planetary evolution, Earth-like…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 21,
                    "item": {
                        "@type": "Quotation",
                        "text": "My high-school friends and I felt part of a community of smart, forward-looking space and technology freaks.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/my-high-school-friends-and-i-felt-part-of-a-community-of-smart/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/3a7/david-grinspoon-5141_community_my-high-school-friends-and-i-felt-part-o_2708425.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/3a7/david-grinspoon-5141_community_my-high-school-friends-and-i-felt-part-o_2708425.jpg",
                            "url": "https://sms4smile.com/quotes/i/3a7/david-grinspoon-5141_community_my-high-school-friends-and-i-felt-part-o_2708425.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“My high-school friends and I felt part of a community of smart, forward-looking space and technology freaks.” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 22,
                    "item": {
                        "@type": "Quotation",
                        "text": "Humans are possessed, to some degree, with the power of foresight. Yet we so often learn things the hard way, through disaster.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/humans-are-possessed-to-some-degree-with-the-power-of-foresight-yet/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/f19/david-grinspoon-5141_disaster_humans-are-possessed-to-some-degree-with_2864244.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/f19/david-grinspoon-5141_disaster_humans-are-possessed-to-some-degree-with_2864244.jpg",
                            "url": "https://sms4smile.com/quotes/i/f19/david-grinspoon-5141_disaster_humans-are-possessed-to-some-degree-with_2864244.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Humans are possessed, to some degree, with the power of foresight. Yet we so often learn things the hard…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 23,
                    "item": {
                        "@type": "Quotation",
                        "text": "It turns out one of my dad's best friends was Carl Sagan when I was little. They were both Harvard professors.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/it-turns-out-one-of-my-dad-s-best-friends-was-carl-sagan-when-i-was/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/239/david-grinspoon-5141_best_it-turns-out-one-of-my-dad-s-best-friend_1753749.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/239/david-grinspoon-5141_best_it-turns-out-one-of-my-dad-s-best-friend_1753749.jpg",
                            "url": "https://sms4smile.com/quotes/i/239/david-grinspoon-5141_best_it-turns-out-one-of-my-dad-s-best-friend_1753749.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“It turns out one of my dad's best friends was Carl Sagan when I was little. They were both Harvard professors.” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 24,
                    "item": {
                        "@type": "Quotation",
                        "text": "I'm an astrobiologist, and I come from a planetary science background, so in a very broad sense, I study the evolution of planetary environments.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/i-m-an-astrobiologist-and-i-come-from-a-planetary-science-background/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/c45/david-grinspoon-5141_biology_i-m-an-astrobiologist-and-i-come-from-a_3227588.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/c45/david-grinspoon-5141_biology_i-m-an-astrobiologist-and-i-come-from-a_3227588.jpg",
                            "url": "https://sms4smile.com/quotes/i/c45/david-grinspoon-5141_biology_i-m-an-astrobiologist-and-i-come-from-a_3227588.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“I'm an astrobiologist, and I come from a planetary science background, so in a very broad sense, I study the…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 25,
                    "item": {
                        "@type": "Quotation",
                        "text": "As long as we can imagine a better path, of course we are obligated to seek it. This is why unwarranted pessimism about our future is actually irresponsible.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/as-long-as-we-can-imagine-a-better-path-of-course-we-are-obligated-to/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/826/david-grinspoon-5141_better_as-long-as-we-can-imagine-a-better-path_2538880.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/826/david-grinspoon-5141_better_as-long-as-we-can-imagine-a-better-path_2538880.jpg",
                            "url": "https://sms4smile.com/quotes/i/826/david-grinspoon-5141_better_as-long-as-we-can-imagine-a-better-path_2538880.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“As long as we can imagine a better path, of course we are obligated to seek it. This is why unwarranted…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 26,
                    "item": {
                        "@type": "Quotation",
                        "text": "Through space-based climate studies, my colleagues and I have learned that a stable and comfortable climate is not something to take for granted.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/through-space-based-climate-studies-my-colleagues-and-i-have-learned/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/788/david-grinspoon-5141_colleagues_through-space-based-climate-studies-my-c_102862.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/788/david-grinspoon-5141_colleagues_through-space-based-climate-studies-my-c_102862.jpg",
                            "url": "https://sms4smile.com/quotes/i/788/david-grinspoon-5141_colleagues_through-space-based-climate-studies-my-c_102862.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Through space-based climate studies, my colleagues and I have learned that a stable and comfortable climate…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 27,
                    "item": {
                        "@type": "Quotation",
                        "text": "In environments that are energy-rich but liquid-poor, like near the surface of Titan, natural selection may favor organisms that use their metabolic heat to melt their own watering holes.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/in-environments-that-are-energy-rich-but-liquid-poor-like-near-the/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/400/david-grinspoon-5141_biology_in-environments-that-are-energy-rich-but_1456269.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/400/david-grinspoon-5141_biology_in-environments-that-are-energy-rich-but_1456269.jpg",
                            "url": "https://sms4smile.com/quotes/i/400/david-grinspoon-5141_biology_in-environments-that-are-energy-rich-but_1456269.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“In environments that are energy-rich but liquid-poor, like near the surface of Titan, natural selection may…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 28,
                    "item": {
                        "@type": "Quotation",
                        "text": "There was a long history of people believing there was life on Venus. It was about the same size as Earth. It had clouds. It was commonly believed it was tropical - wet, hot and steamy.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/there-was-a-long-history-of-people-believing-there-was-life-on-venus/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/006/david-grinspoon-5141_clouds_there-was-a-long-history-of-people-belie_2759784.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/006/david-grinspoon-5141_clouds_there-was-a-long-history-of-people-belie_2759784.jpg",
                            "url": "https://sms4smile.com/quotes/i/006/david-grinspoon-5141_clouds_there-was-a-long-history-of-people-belie_2759784.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“There was a long history of people believing there was life on Venus. It was about the same size as Earth…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 29,
                    "item": {
                        "@type": "Quotation",
                        "text": "I think the best SF writers are very aware of what we, in the scientific community, are doing, thinking, and discovering.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/i-think-the-best-sf-writers-are-very-aware-of-what-we-in-the/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/4a5/david-grinspoon-5141_best_i-think-the-best-sf-writers-are-very-awa_9812.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/4a5/david-grinspoon-5141_best_i-think-the-best-sf-writers-are-very-awa_9812.jpg",
                            "url": "https://sms4smile.com/quotes/i/4a5/david-grinspoon-5141_best_i-think-the-best-sf-writers-are-very-awa_9812.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“I think the best SF writers are very aware of what we, in the scientific community, are doing, thinking, and…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 30,
                    "item": {
                        "@type": "Quotation",
                        "text": "Time and time again, our species has escaped existential threats by reinventing ourselves, finding new skills not coded in our genes to survive new challenges not previously encountered.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/time-and-time-again-our-species-has-escaped-existential-threats-by/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/ee4/david-grinspoon-5141_challenges_time-and-time-again-our-species-has-esca_167110.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/ee4/david-grinspoon-5141_challenges_time-and-time-again-our-species-has-esca_167110.jpg",
                            "url": "https://sms4smile.com/quotes/i/ee4/david-grinspoon-5141_challenges_time-and-time-again-our-species-has-esca_167110.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Time and time again, our species has escaped existential threats by reinventing ourselves, finding new…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 31,
                    "item": {
                        "@type": "Quotation",
                        "text": "Seriously, we should start taxing churches and have tax-exempt places for worship and study of nature and art. Charge ten bucks for Sunday services and make the Botanic Gardens free.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/seriously-we-should-start-taxing-churches-and-have-tax-exempt-places/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/58f/david-grinspoon-5141_art_seriously-we-should-start-taxing-churche_2928707.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/58f/david-grinspoon-5141_art_seriously-we-should-start-taxing-churche_2928707.jpg",
                            "url": "https://sms4smile.com/quotes/i/58f/david-grinspoon-5141_art_seriously-we-should-start-taxing-churche_2928707.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Seriously, we should start taxing churches and have tax-exempt places for worship and study of nature and…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 32,
                    "item": {
                        "@type": "Quotation",
                        "text": "Venus and Mars are our next of kin: they are the two most Earth-like planets that we know about. They're the only two other very Earth-like planets in our solar system, meaning they orbit close to the sun; they have rocky surfaces and thin atmospheres.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/venus-and-mars-are-our-next-of-kin-they-are-the-two-most-earth-like/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/05a/david-grinspoon-5141_mars_venus-and-mars-are-our-next-of-kin-they_291989.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/05a/david-grinspoon-5141_mars_venus-and-mars-are-our-next-of-kin-they_291989.jpg",
                            "url": "https://sms4smile.com/quotes/i/05a/david-grinspoon-5141_mars_venus-and-mars-are-our-next-of-kin-they_291989.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Venus and Mars are our next of kin: they are the two most Earth-like planets that we know about. They're the…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 33,
                    "item": {
                        "@type": "Quotation",
                        "text": "We've almost been wiped out as a species many times, going back millions of years, and we've survived by reinventing ourselves and enlarging our circles of awareness, inventing new technologies and social structures.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/we-ve-almost-been-wiped-out-as-a-species-many-times-going-back/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/e7c/david-grinspoon-5141_awareness_we-ve-almost-been-wiped-out-as-a-species_1575206.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/e7c/david-grinspoon-5141_awareness_we-ve-almost-been-wiped-out-as-a-species_1575206.jpg",
                            "url": "https://sms4smile.com/quotes/i/e7c/david-grinspoon-5141_awareness_we-ve-almost-been-wiped-out-as-a-species_1575206.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“We've almost been wiped out as a species many times, going back millions of years, and we've survived by…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 34,
                    "item": {
                        "@type": "Quotation",
                        "text": "It will be a long time, if ever, before we get to study Earth-like planets orbiting around other stars, so really, the study of Venus and Mars is the best opportunity that we have, and can imagine having anytime in the future, to understand the evolution of Earth-like planets.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/it-will-be-a-long-time-if-ever-before-we-get-to-study-earth-like/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/27a/david-grinspoon-5141_best_it-will-be-a-long-time-if-ever-before-we_1995114.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/27a/david-grinspoon-5141_best_it-will-be-a-long-time-if-ever-before-we_1995114.jpg",
                            "url": "https://sms4smile.com/quotes/i/27a/david-grinspoon-5141_best_it-will-be-a-long-time-if-ever-before-we_1995114.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“It will be a long time, if ever, before we get to study Earth-like planets orbiting around other stars, so…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 35,
                    "item": {
                        "@type": "Quotation",
                        "text": "Thinking about the new epoch - often called the Anthropocene, or the age of humanity - challenges us to look at ourselves in the mirror of deep time, measured not in centuries or even in millennia, but over millions and billions of years.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/thinking-about-the-new-epoch-often-called-the-anthropocene-or-the-age/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/de3/david-grinspoon-5141_age_thinking-about-the-new-epoch-often-calle_530060.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/de3/david-grinspoon-5141_age_thinking-about-the-new-epoch-often-calle_530060.jpg",
                            "url": "https://sms4smile.com/quotes/i/de3/david-grinspoon-5141_age_thinking-about-the-new-epoch-often-calle_530060.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Thinking about the new epoch - often called the Anthropocene, or the age of humanity - challenges us to look…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 36,
                    "item": {
                        "@type": "Quotation",
                        "text": "I do comparative studies of climate evolution, and the interactions between planetary atmosphere and surfaces and their radiation environment, and try to understand the environmental factors that can affect a planet's habitability and how they change over time.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/i-do-comparative-studies-of-climate-evolution-and-the-interactions/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/a41/david-grinspoon-5141_change_i-do-comparative-studies-of-climate-evol_76975.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/a41/david-grinspoon-5141_change_i-do-comparative-studies-of-climate-evol_76975.jpg",
                            "url": "https://sms4smile.com/quotes/i/a41/david-grinspoon-5141_change_i-do-comparative-studies-of-climate-evol_76975.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“I do comparative studies of climate evolution, and the interactions between planetary atmosphere and…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 37,
                    "item": {
                        "@type": "Quotation",
                        "text": "It's one of the big mysteries about Venus: How did it get so different from Earth when it seems likely to have started so similarly? The question becomes richer when you consider astrobiology, the possibility that Venus and Earth were very similar during the time of the origin of life on Earth.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/it-s-one-of-the-big-mysteries-about-venus-how-did-it-get-so-different/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/ef2/david-grinspoon-5141_big_it-s-one-of-the-big-mysteries-about-venu_1054890.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/ef2/david-grinspoon-5141_big_it-s-one-of-the-big-mysteries-about-venu_1054890.jpg",
                            "url": "https://sms4smile.com/quotes/i/ef2/david-grinspoon-5141_big_it-s-one-of-the-big-mysteries-about-venu_1054890.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“It's one of the big mysteries about Venus: How did it get so different from Earth when it seems likely to…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 38,
                    "item": {
                        "@type": "Quotation",
                        "text": "Even as our unwitting alterations to Earth's carbon and hydrological cycles slowly make storms more damaging, our ability to monitor our planet from space and make reliable short-term forecasts have equipped us enormously to withstand them.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/even-as-our-unwitting-alterations-to-earth-s-carbon-and-hydrological/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/492/david-grinspoon-5141_ability_even-as-our-unwitting-alterations-to-ear_1922680.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/492/david-grinspoon-5141_ability_even-as-our-unwitting-alterations-to-ear_1922680.jpg",
                            "url": "https://sms4smile.com/quotes/i/492/david-grinspoon-5141_ability_even-as-our-unwitting-alterations-to-ear_1922680.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Even as our unwitting alterations to Earth's carbon and hydrological cycles slowly make storms more…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 39,
                    "item": {
                        "@type": "Quotation",
                        "text": "Among the radio astronomers of SETI - the Search for Extraterrestrial Intelligence - it's only sort-of a joke that the true hallmark of intelligent life is the creation of radio astronomy.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/among-the-radio-astronomers-of-seti-the-search-for-extraterrestrial/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/527/david-grinspoon-5141_astronomy_among-the-radio-astronomers-of-seti-the_1855453.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/527/david-grinspoon-5141_astronomy_among-the-radio-astronomers-of-seti-the_1855453.jpg",
                            "url": "https://sms4smile.com/quotes/i/527/david-grinspoon-5141_astronomy_among-the-radio-astronomers-of-seti-the_1855453.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“Among the radio astronomers of SETI - the Search for Extraterrestrial Intelligence - it's only sort-of a…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                },
                {
                    "@type": "ListItem",
                    "position": 40,
                    "item": {
                        "@type": "Quotation",
                        "text": "In my Ph.D. thesis, written in 1989, I discussed the fact that when a civilization develops the technology to prevent catastrophic asteroid impacts, it marks a significant moment in the evolution of the planet.",
                        "creator": {
                            "@type": "Person",
                            "name": "David Grinspoon"
                        },
                        "url": "https://sms4smile.com/quotes/david-grinspoon/in-my-ph-d-thesis-written-in-1989-i-discussed-the-fact-that-when-a/",
                        "image": {
                            "@type": "ImageObject",
                            "@id": "https://sms4smile.com/quotes/i/4d1/david-grinspoon-5141_evolution_in-my-ph-d-thesis-written-in-1989-i-disc_2427954.jpg",
                            "contentUrl": "https://sms4smile.com/quotes/i/4d1/david-grinspoon-5141_evolution_in-my-ph-d-thesis-written-in-1989-i-disc_2427954.jpg",
                            "url": "https://sms4smile.com/quotes/i/4d1/david-grinspoon-5141_evolution_in-my-ph-d-thesis-written-in-1989-i-disc_2427954.jpg",
                            "width": 1080,
                            "height": 1080,
                            "caption": "“In my Ph.D. thesis, written in 1989, I discussed the fact that when a civilization develops the technology…” — David Grinspoon",
                            "creditText": "SMS4Smile Quotes",
                            "creator": {
                                "@id": "https://sms4smile.com/quotes/#organization"
                            }
                        }
                    }
                }
            ]
        },
        {
            "@type": "Person",
            "@id": "https://sms4smile.com/quotes/author/david-grinspoon/#person",
            "name": "David Grinspoon",
            "url": "https://sms4smile.com/quotes/author/david-grinspoon/",
            "image": "https://sms4smile.com/quotes/wp-content/uploads/sms4s/authors/processed/b002/author-david-grinspoon-5141.jpg",
            "description": "David Grinspoon is an American astrobiologist who worked at NASA."
        },
        {
            "@type": "ProfilePage",
            "@id": "https://sms4smile.com/quotes/author/david-grinspoon/page/2/#webpage",
            "url": "https://sms4smile.com/quotes/author/david-grinspoon/page/2/",
            "name": "David Grinspoon",
            "isPartOf": {
                "@id": "https://sms4smile.com/quotes/#website"
            },
            "mainEntity": {
                "@id": "https://sms4smile.com/quotes/author/david-grinspoon/#person"
            },
            "primaryImageOfPage": {
                "@id": "https://sms4smile.com/quotes/i/1d7/david-grinspoon-5141_clouds_among-the-plausible-niches-for-extraterr_1508240.jpg"
            },
            "description": "David Grinspoon is an American astrobiologist who worked at NASA. Browse 103 David Grinspoon quotes.",
            "breadcrumb": {
                "@id": "https://sms4smile.com/quotes/author/david-grinspoon/page/2/#breadcrumb"
            }
        },
        {
            "@type": "BreadcrumbList",
            "@id": "https://sms4smile.com/quotes/author/david-grinspoon/page/2/#breadcrumb",
            "itemListElement": [
                {
                    "@type": "ListItem",
                    "position": 1,
                    "name": "Home",
                    "item": "https://sms4smile.com/"
                },
                {
                    "@type": "ListItem",
                    "position": 2,
                    "name": "Quotes",
                    "item": "https://sms4smile.com/quotes/"
                },
                {
                    "@type": "ListItem",
                    "position": 3,
                    "name": "Authors",
                    "item": "https://sms4smile.com/quotes/authors/"
                },
                {
                    "@type": "ListItem",
                    "position": 4,
                    "name": "David Grinspoon",
                    "item": "https://sms4smile.com/quotes/author/david-grinspoon/page/2/"
                }
            ]
        },
        {
            "@type": "WebSite",
            "@id": "https://sms4smile.com/quotes/#website",
            "name": "SMS4Smile Quotes",
            "url": "https://sms4smile.com/quotes/",
            "publisher": {
                "@id": "https://sms4smile.com/quotes/#organization"
            }
        },
        {
            "@type": "Organization",
            "@id": "https://sms4smile.com/quotes/#organization",
            "name": "SMS4Smile Quotes",
            "url": "https://sms4smile.com/quotes/",
            "logo": {
                "@type": "ImageObject",
                "url": "https://sms4smile.com/quotes/wp-content/themes/sq/assets/icons/icon-512.png",
                "width": 512,
                "height": 512
            }
        }
    ]
}
```