--- title: "2 Population Billion Quotes By Dan Brown" description: "2 Population Billion quotes by Dan Brown. Plus more from Dan Brown and more Population Billion sayings from other authors." image: "https://sms4smile.com/quotes/i/311/dan-brown-203_global-population_any-environmental-biologist-or-statistic_426885.png" --- > [“Any environmental biologist or statistician will tell you that humankind’s best chance of long-term survival occurs with a global population of around four billion.”](https://sms4smile.com/quotes/dan-brown/any-environmental-biologist-or-statistician-will-tell-you-that/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) [Image](https://sms4smile.com/quotes/i/311/dan-brown-203_global-population_any-environmental-biologist-or-statistic_426885.png) > [“.."consider this. It took the earth's population thousand of years-from the early dawn of man all the way to the early 1800s-to reach one billion people. Then astoundingly, it took only about a hundred years to double the population to…](https://sms4smile.com/quotes/dan-brown/consider-this-it-took-the-earth-s-population-thousand-of-years-from/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) [Image](https://sms4smile.com/quotes/i/8f1/dan-brown-203_human-race_consider-this-it-took-the-earth-s-popula_1698925.png) ## More by Dan Brown > [The more science I studied, the more I saw that physics becomes metaphysics and numbers become imaginary numbers. The farther you go into science,…](https://sms4smile.com/quotes/dan-brown/the-more-science-i-studied-the-more-i-saw-that-physics-becomes/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [A little faith can do wonders...](https://sms4smile.com/quotes/dan-brown/a-little-faith-can-do-wonders/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [For me, the spiritual quest will be a life-long work in progress.](https://sms4smile.com/quotes/dan-brown/for-me-the-spiritual-quest-will-be-a-life-long-work-in-progress/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [Sometimes all it takes is a tiny shift of perspective to see something familiar in a totally new light.](https://sms4smile.com/quotes/dan-brown/sometimes-all-it-takes-is-a-tiny-shift-of-perspective-to-see/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [“Leonardo believed his research had the potential to convert millions to a more spiritual life. Last year he categorically proved the existence of an…](https://sms4smile.com/quotes/dan-brown/leonardo-believed-his-research-had-the-potential-to-convert-millions/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [“The price of greatness...is responsibility - Winston Churchill”](https://sms4smile.com/quotes/dan-brown/the-price-of-greatness-is-responsibility-winston-churchill/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [I am a completely horizontal author. I can't think unless I'm lying down, either in bed or stretched on a couch and with a…](https://sms4smile.com/quotes/dan-brown/i-am-a-completely-horizontal-author-i-can-t-think-unless-i-m-lying/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [We did not have a television while I was growing up, and so I read voraciously. My earliest memory of being utterly transfixed by…](https://sms4smile.com/quotes/dan-brown/we-did-not-have-a-television-while-i-was-growing-up-and-so-i-read/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [“Robert,” Ambra whispered, “just remember the wise words of Disney’s Princess Elsa.” Langdon turned. “I’m sorry?” Ambra smiled softly. “Let it go.”](https://sms4smile.com/quotes/dan-brown/robert-ambra-whispered-just-remember-the-wise-words-of-disney-s/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [“¿Tienes enemigos? Bien. ¡Eso significa que has defendido algo!”.”](https://sms4smile.com/quotes/dan-brown/tienes-enemigos-bien-eso-significa-que-has-defendido-algo/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [Who will guard the guards ? If we're the guards of society, then who will watch us and make sure that we're not dangerous?](https://sms4smile.com/quotes/dan-brown/who-will-guard-the-guards-if-we-re-the-guards-of-society-then-who/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [“Dante's poem, Langdon was now reminded, was not so much about the misery of hell as it was about the power of the human…](https://sms4smile.com/quotes/dan-brown/dante-s-poem-langdon-was-now-reminded-was-not-so-much-about-the/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [It's kind of a catch-22 now because since the 'Da Vinci Code,' I have access to places and people that I didn't have access…](https://sms4smile.com/quotes/dan-brown/it-s-kind-of-a-catch-22-now-because-since-the-da-vinci-code-i-have/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [“The man was no stranger to deception, and yet his heart was pounding wildly now. He took another deep, throbbing breath. You've been deceiving…](https://sms4smile.com/quotes/dan-brown/the-man-was-no-stranger-to-deception-and-yet-his-heart-was-pounding/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) > [“the entire operating system of the cosmos could be summed up by a single overriding command: spread energy!”](https://sms4smile.com/quotes/dan-brown/the-entire-operating-system-of-the-cosmos-could-be-summed-up-by-a/) [Dan Brown](https://sms4smile.com/quotes/author/dan-brown/) ```json { "@context": "https://schema.org", "@graph": [ { "@type": "ItemList", "@id": "https://sms4smile.com/quotes/about/population-billion/dan-brown/#itemlist", "name": "2 Population Billion Quotes By Dan Brown", "numberOfItems": 2, "itemListElement": [ { "@type": "ListItem", "position": 1, "item": { "@type": "Quotation", "text": "“Any environmental biologist or statistician will tell you that humankind’s best chance of long-term survival occurs with a global population of around four billion.”", "creator": { "@type": "Person", "name": "Dan Brown" }, "url": "https://sms4smile.com/quotes/dan-brown/any-environmental-biologist-or-statistician-will-tell-you-that/", "image": { "@type": "ImageObject", "@id": "https://sms4smile.com/quotes/i/311/dan-brown-203_global-population_any-environmental-biologist-or-statistic_426885.png", "contentUrl": "https://sms4smile.com/quotes/i/311/dan-brown-203_global-population_any-environmental-biologist-or-statistic_426885.png", "url": "https://sms4smile.com/quotes/i/311/dan-brown-203_global-population_any-environmental-biologist-or-statistic_426885.png", "width": 1080, "height": 1080, "caption": "“Any environmental biologist or statistician will tell you that humankind’s best chance of long-term survival…” — Dan Brown", "creditText": "SMS4Smile Quotes", "creator": { "@id": "https://sms4smile.com/quotes/#organization" } } } }, { "@type": "ListItem", "position": 2, "item": { "@type": "Quotation", "text": "“..\"consider this. 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