---
title: "33 Learning Quotes By Carl Sagan"
description: "33 Learning quotes by Carl Sagan. Plus more from Carl Sagan and more Learning sayings from other authors."
image: "https://sms4smile.com/quotes/i/58e/carl-sagan-160_learning_science-gropes-and-staggers-toward-impro_2029967.jpg"
---

> [“Science gropes and staggers toward improved understanding.”](https://sms4smile.com/quotes/carl-sagan/science-gropes-and-staggers-toward-improved-understanding/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/58e/carl-sagan-160_learning_science-gropes-and-staggers-toward-impro_2029967.jpg)

> [You have to know the past to understand the present.](https://sms4smile.com/quotes/carl-sagan/you-have-to-know-the-past-to-understand-the-present/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/32d/carl-sagan-160_anger_you-have-to-know-the-past-to-understand_3127583.jpg)

> [Our passion for learning ... is our tool for survival.](https://sms4smile.com/quotes/carl-sagan/our-passion-for-learning-is-our-tool-for-survival/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/44b/carl-sagan-160_education_our-passion-for-learning-is-our-tool-for_358836.jpg)

> [The universe forces those who live in it to understand it.](https://sms4smile.com/quotes/carl-sagan/the-universe-forces-those-who-live-in-it-to-understand-it/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/8db/carl-sagan-160_force_the-universe-forces-those-who-live-in-it_1791216.jpg)

> [Understanding is a kind of ecstasy](https://sms4smile.com/quotes/carl-sagan/understanding-is-a-kind-of-ecstasy/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/06c/carl-sagan-160_curiosity_understanding-is-a-kind-of-ecstasy-53184_531846.jpg)

> [Wisdom lies in understanding our limitations.](https://sms4smile.com/quotes/carl-sagan/wisdom-lies-in-understanding-our-limitations/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/0cf/carl-sagan-160_learning_wisdom-lies-in-understanding-our-limitat_1584486.jpg)

> [ “\[...\] science carries us towards an understanding of how the world is, rather than how we would wish it to be \[...\]” ](https://sms4smile.com/quotes/carl-sagan/science-carries-us-towards-an-understanding-of-how-the-world-is/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/715/carl-sagan-160_knowledge_science-carries-us-towards-an-understand_85840.jpg)

> [Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.](https://sms4smile.com/quotes/carl-sagan/our-species-needs-and-deserves-a-citizenry-with-minds-wide-awake-and/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/5be/carl-sagan-160_awake_our-species-needs-and-deserves-a-citizen_1222002.jpg)

> [“We must understand the Cosmos as it is and not confuse how it is with how we wish it to be.”](https://sms4smile.com/quotes/carl-sagan/we-must-understand-the-cosmos-as-it-is-and-not-confuse-how-it-is-with/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/eeb/carl-sagan-160_learning_we-must-understand-the-cosmos-as-it-is-a_972946.jpg)

> [The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.](https://sms4smile.com/quotes/carl-sagan/the-brain-is-like-a-muscle-when-it-is-in-use-we-feel-very-good/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/aa7/carl-sagan-160_brain_the-brain-is-like-a-muscle-when-it-is-in_773206.jpg)

> [It is of interest to note that while some dolphins are reported to have learned English - up to fifty words used…](https://sms4smile.com/quotes/carl-sagan/it-is-of-interest-to-note-that-while-some-dolphins-are-reported-to/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/7ca/carl-sagan-160_dolphins_it-is-of-interest-to-note-that-while-som_2952267.jpg)

> [We are...capable of using our compassion and our intelligence, our technology and our wealth, to make an abundant and meaningful life for…](https://sms4smile.com/quotes/carl-sagan/we-are-capable-of-using-our-compassion-and-our-intelligence-our/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/0f2/carl-sagan-160_astronomy_we-are-capable-of-using-our-compassion-a_658806.jpg)

> [The size and age of the Cosmos are beyond ordinary human understanding. Lost somewhere between immensity and eternity is our tiny planetary…](https://sms4smile.com/quotes/carl-sagan/the-size-and-age-of-the-cosmos-are-beyond-ordinary-human/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/253/carl-sagan-160_age_the-size-and-age-of-the-cosmos-are-beyon_2809812.jpg)

> [The understanding of the intent of the artist which I can achieve when high sometimes carries over to when I’m down. This…](https://sms4smile.com/quotes/carl-sagan/the-understanding-of-the-intent-of-the-artist-which-i-can-achieve/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/cd9/carl-sagan-160_achieve_the-understanding-of-the-intent-of-the-a_2989593.jpg)

> [We are an intelligent species and the use of our intelligence quite properly gives us pleasure. In this respect the brain is…](https://sms4smile.com/quotes/carl-sagan/we-are-an-intelligent-species-and-the-use-of-our-intelligence-quite/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/ccf/carl-sagan-160_brain_we-are-an-intelligent-species-and-the-us_1047448.jpg)

> [The very act of understanding is a celebration of joining, merging, even if on a very modest scale, with the magnificence of…](https://sms4smile.com/quotes/carl-sagan/the-very-act-of-understanding-is-a-celebration-of-joining-merging/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/8e6/carl-sagan-160_celebration_the-very-act-of-understanding-is-a-celeb_2781507.jpg)

> [“...explorations that are exhilarating to consider. They remind us that humans have evolved to wonder, that understanding is a joy, that knowledge…](https://sms4smile.com/quotes/carl-sagan/explorations-that-are-exhilarating-to-consider-they-remind-us-that/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/1a5/carl-sagan-160_knowledge_explorations-that-are-exhilarating-to-co_3101526.jpg)

> [“If we are to send people, it must be for a very good reason - and with a realistic understanding that almost…](https://sms4smile.com/quotes/carl-sagan/if-we-are-to-send-people-it-must-be-for-a-very-good-reason-and-with-a/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/9eb/carl-sagan-160_astronauts_if-we-are-to-send-people-it-must-be-for_2919101.jpg)

> [In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they…](https://sms4smile.com/quotes/carl-sagan/in-science-it-often-happens-that-scientists-say-you-know-that-s-a/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/486/carl-sagan-160_argument_in-science-it-often-happens-that-scienti_260934.jpg)

> [The library connects us with the insight and knowledge, painfully extracted from Nature, of the greatest minds that ever were, with the…](https://sms4smile.com/quotes/carl-sagan/the-library-connects-us-with-the-insight-and-knowledge-painfully/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/802/carl-sagan-160_best-teacher_the-library-connects-us-with-the-insight_2259795.jpg)

> [Eratosthenes was the director of the great library of Alexandria, the Centre of science and learning in the ancient world. Aristotle had…](https://sms4smile.com/quotes/carl-sagan/eratosthenes-was-the-director-of-the-great-library-of-alexandria-the/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/0b7/carl-sagan-160_alexandria_eratosthenes-was-the-director-of-the-gre_636455.jpg)

> [“Because science carries us toward an understanding of how the world is, rather than how we would wish it to be, its…](https://sms4smile.com/quotes/carl-sagan/because-science-carries-us-toward-an-understanding-of-how-the-world/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/48f/carl-sagan-160_learning_because-science-carries-us-toward-an-und_2532667.jpg)

> [“In its encounter with Nature, science invariably elicits a sense of reverence and awe. The very act of understanding is a celebration…](https://sms4smile.com/quotes/carl-sagan/in-its-encounter-with-nature-science-invariably-elicits-a-sense-of/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/3cb/carl-sagan-160_astronomy_in-its-encounter-with-nature-science-inv_1012627.jpg)

> [“Dartmouth College employs computer learning techniques in a very broad array of courses. For example, a student can gain a deep insight…](https://sms4smile.com/quotes/carl-sagan/dartmouth-college-employs-computer-learning-techniques-in-a-very/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/491/carl-sagan-160_computers_dartmouth-college-employs-computer-learn_1121727.jpg)

> [“I think I’m able to explain things because understanding wasn't entirely easy for me. Some things that the most brilliant students were…](https://sms4smile.com/quotes/carl-sagan/i-think-i-m-able-to-explain-things-because-understanding-wasn-t/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/453/carl-sagan-160_learning_i-think-i-m-able-to-explain-things-becau_2304730.jpg)

> [“This sort of information gathering is precisely what we call play. And the important function of play is thus revealed: it permits…](https://sms4smile.com/quotes/carl-sagan/this-sort-of-information-gathering-is-precisely-what-we-call-play-and/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/f43/carl-sagan-160_computers_this-sort-of-information-gathering-is-pr_1094665.jpg)

> [“For thousands of years humans were oppressed— as some of us still are— by the notion that the universe is a marionette…](https://sms4smile.com/quotes/carl-sagan/for-thousands-of-years-humans-were-oppressed-as-some-of-us-still-are/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/a78/carl-sagan-160_enlightenment_for-thousands-of-years-humans-were-oppre_86767.jpg)

> [“The size and age of the Cosmos are beyond ordinary human understanding. Lost somewhere between immensity and eternity is our tiny planetary…](https://sms4smile.com/quotes/carl-sagan/the-size-and-age-of-the-cosmos-are-beyond-ordinary-human-2/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/dce/carl-sagan-160_cosmos_the-size-and-age-of-the-cosmos-are-beyon_3175712.jpg)

> [A central lesson of science is that to understand complex issues (or even simple ones), we must try to free our minds…](https://sms4smile.com/quotes/carl-sagan/a-central-lesson-of-science-is-that-to-understand-complex-issues-or/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/aab/carl-sagan-160_argument_a-central-lesson-of-science-is-that-to-u_2712787.jpg)

> [“Science is more than a body of knowledge. It is a way of thinking; a way of skeptically interrogating the universe with…](https://sms4smile.com/quotes/carl-sagan/science-is-more-than-a-body-of-knowledge-it-is-a-way-of-thinking-a/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/daf/carl-sagan-160_learning_science-is-more-than-a-body-of-knowledge_1333049.jpg)

> [Widespread intellectual and moral docility may be convenient for leaders in the short term, but it is suicidal for nations in the…](https://sms4smile.com/quotes/carl-sagan/widespread-intellectual-and-moral-docility-may-be-convenient-for/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/b16/carl-sagan-160_character_widespread-intellectual-and-moral-docili_983499.jpg)

> [“For a long time the human instinct to understand was thwarted by facile religious explanations, as in ancient Greece in the time…](https://sms4smile.com/quotes/carl-sagan/for-a-long-time-the-human-instinct-to-understand-was-thwarted-by/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/515/carl-sagan-160_ancient-greece_for-a-long-time-the-human-instinct-to-un_153768.jpg)

> [What a splendid perspective contact with a profoundly different civilization might provide! In a cosmic setting vast and old beyond ordinary human…](https://sms4smile.com/quotes/carl-sagan/what-a-splendid-perspective-contact-with-a-profoundly-different/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

[Image](https://sms4smile.com/quotes/i/344/carl-sagan-160_blue_what-a-splendid-perspective-contact-with_2291597.jpg)

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## More by Carl Sagan

> [It is sometimes said that scientists are unromantic, that their passion to figure out robs the world of beauty and mystery. But is it…](https://sms4smile.com/quotes/carl-sagan/it-is-sometimes-said-that-scientists-are-unromantic-that-their/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [The prediction of nuclear winter is drawn not, of course, from any direct experience with the consequences of global nuclear war, but rather from…](https://sms4smile.com/quotes/carl-sagan/the-prediction-of-nuclear-winter-is-drawn-not-of-course-from-any/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [The suppression of uncomfortable ideas may be common in religion or in politics, but it is not the path to knowledge; it has no…](https://sms4smile.com/quotes/carl-sagan/the-suppression-of-uncomfortable-ideas-may-be-common-in-religion-or/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [“Telepathy’ literally means to feel at a distance, just as ‘telephone’ is to hear at a distance and ‘television’ is to see at a…](https://sms4smile.com/quotes/carl-sagan/telepathy-literally-means-to-feel-at-a-distance-just-as-telephone-is/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [“On the scale of worlds—to say nothing of stars or galaxies—humans are inconsequential, a thin film of life on an obscure and solitary lump…](https://sms4smile.com/quotes/carl-sagan/on-the-scale-of-worlds-to-say-nothing-of-stars-or-galaxies-humans-are/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [Every one of us is, in the cosmic perspective, precious. If a human disagrees with you, let him live. In a hundred billion galaxies,…](https://sms4smile.com/quotes/carl-sagan/every-one-of-us-is-in-the-cosmic-perspective-precious-if-a-human/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [In our time, we have sifted the sands of Mars, we have established a presence there, we have fulfilled a century of dreams!](https://sms4smile.com/quotes/carl-sagan/in-our-time-we-have-sifted-the-sands-of-mars-we-have-established-a/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [ “\[ When a religious couple wrote to Sagan about fulfilled prophecies, he wrote back in May 1996 :\] If ‘fulfilled prophecy’ is your criterion,… ](https://sms4smile.com/quotes/carl-sagan/when-a-religious-couple-wrote-to-sagan-about-fulfilled-prophecies-he/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [Don't judge everyone else by your own limited experience.](https://sms4smile.com/quotes/carl-sagan/don-t-judge-everyone-else-by-your-own-limited-experience/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [“Books permit us to voyage through time, to tap the wisdom of our ancestors. The library connects us with the insight and knowledge, painfully…](https://sms4smile.com/quotes/carl-sagan/books-permit-us-to-voyage-through-time-to-tap-the-wisdom-of-our/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [We live on a hunk of rock and metal that circles a humdrum star that is one of 400 billion other stars that make…](https://sms4smile.com/quotes/carl-sagan/we-live-on-a-hunk-of-rock-and-metal-that-circles-a-humdrum-star-that/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [A tiny blue dot set in a sunbeam. Here it is. That's where we live. That's home. We humans are one species and this…](https://sms4smile.com/quotes/carl-sagan/a-tiny-blue-dot-set-in-a-sunbeam-here-it-is-that-s-where-we-live-that/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [Any sufficiently crisp question can be answered by a single binary digit-0 or 1, yes or no.](https://sms4smile.com/quotes/carl-sagan/any-sufficiently-crisp-question-can-be-answered-by-a-single-binary/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [Humans — who enslave, castrate, experiment on, and fillet other animals — have had an understandable penchant for pretending animals do not feel pain.…](https://sms4smile.com/quotes/carl-sagan/humans-who-enslave-castrate-experiment-on-and-fillet-other-animals/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

> [Every star may be a sun to someone.](https://sms4smile.com/quotes/carl-sagan/every-star-may-be-a-sun-to-someone/)

[Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/)

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                        "text": "“Dartmouth College employs computer learning techniques in a very broad array of courses. For example, a student can gain a deep insight into the statistics of Mendelian genetics in an hour with the computer rather than spend a year crossing fruit flies in the laboratory.”",
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                        "text": "“This sort of information gathering is precisely what we call play. And the important function of play is thus revealed: it permits us to gain, without any particular future application in mind, a holistic understanding of the world, which is both a complement of and a preparation for later analytical activities.”",
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                        "text": "“For thousands of years humans were oppressed— as some of us still are— by the notion that the universe is a marionette whose strings are pulled by a god or gods, unseen and inscrutable. Then, 2,500 years ago, there was a glorious awakening in Ionia: on Samos and the other nearby Greek colonies that grew up among the islands and inlets of the busy eastern Aegean Sea. Suddenly there were people who believed that everything was made of atoms; that human beings and other animals had sprung from simpler forms; that diseases were not caused by demons or the gods; that the Earth was only a planet going around the Sun. And that the stars were very far away.”",
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                        "text": "“The size and age of the Cosmos are beyond ordinary human understanding. Lost somewhere between immensity and eternity is our tiny planetary home. In a cosmic perspective, most human concerns seem insignificant, even petty. And yet our species is young and curious and brave and shows much promise. In the last few millennia we have made the most astonishing and unexpected discoveries about the Cosmos and our place within it, explorations that are exhilarating to consider. They remind us that humans have evolved to wonder, that understanding is a joy, that knowledge is prerequisite to survival. I believe our future depends on how well we know this Cosmos in which we float like a mote of dust in the morning sky.”",
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                        "text": "A central lesson of science is that to understand complex issues (or even simple ones), we must try to free our minds of dogma and to guarantee the freedom to publish, to contradict, and to experiment. Arguments from authority are unacceptable.",
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                        "text": "“Science is more than a body of knowledge. It is a way of thinking; a way of skeptically interrogating the universe with a fine understanding of human fallibility. If we are not able to ask skeptical questions, to interrogate those who tell us that something is true, to be skeptical of those in authority, then, we are up for grabs for the next charlatan (political or religious) who comes rambling along.”",
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                        "text": "Widespread intellectual and moral docility may be convenient for leaders in the short term, but it is suicidal for nations in the long term. One of the criteria for national leadership should therefore be a talent for understanding, encouraging, and making constructive use of vigorous criticism.",
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                        "text": "“For a long time the human instinct to understand was thwarted by facile religious explanations, as in ancient Greece in the time of Homer , where there were gods of the sky and the Earth, the thunderstorm, the oceans and the underworld, fire and time and love and war; where every tree and meadow had its dryad and maenad.”",
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                        "text": "What a splendid perspective contact with a profoundly different civilization might provide! In a cosmic setting vast and old beyond ordinary human understanding we are a little lonely, and we ponder the ultimate significance, if any, of our tiny but exquisite blue planet, the Earth… In the deepest sense the search for extraterrestrial intelligence is a search for ourselves.",
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