{ "type": "quote", "site": { "name": "Leafy Quotes", "language": "en", "url": "https://www.leafyquotes.com" }, "formats": "Every page has two versions with the same data: JSON (the page address + .json) and markdown (the page address + .md). Append .json or .md to any `url` in this document.", "url": "https://www.leafyquotes.com/carl-sagan/the-varieties-of-scientific-experience/once-upon-a-time", "json": "https://www.leafyquotes.com/carl-sagan/the-varieties-of-scientific-experience/once-upon-a-time.json", "markdown": "https://www.leafyquotes.com/carl-sagan/the-varieties-of-scientific-experience/once-upon-a-time.md", "id": "0df9c618-113f-4d88-834a-d2ad71d3f754", "slug": "once-upon-a-time", "text": "Once upon a time, the best minds of the human species believed that the planets were attached to crystal spheres. ...Both in classic and in medieval times, it was prominently speculated that gods or angels propelled them, gave them a twirl every now and then. The Newtonian gravitational superstructure replaced angels with GMm/r2... as science advances, there seems to be less and less for God to do.", "language": "en", "author": { "name": "Carl Sagan", "slug": "carl-sagan", "url": "https://www.leafyquotes.com/carl-sagan" }, "book": { "title": "The Varieties of Scientific Experience", "slug": "the-varieties-of-scientific-experience", "url": "https://www.leafyquotes.com/carl-sagan/the-varieties-of-scientific-experience" }, "character": null, "chapter": null, "chapter_parent": null, "page": null, "verified": false, "original": null, "other_languages": [], "topics": [ { "name": "science", "slug": "science", "url": "https://www.leafyquotes.com/topics/science" }, { "name": "god", "slug": "god", "url": "https://www.leafyquotes.com/topics/god" } ], "source": { "name": "Wikiquote", "url": "https://en.wikiquote.org/wiki/Carl_Sagan#The_Varieties_of_Scientific_Experience:_A_Personal_View_of_the_Search_for_God_(2006)", "license": { "label": "CC BY-SA 4.0", "url": "https://creativecommons.org/licenses/by-sa/4.0/" } }, "added_at": "2026-09-25T22:40:29", "more_from_book": [ { "id": "f187949d-7572-4dae-a023-2d6317249e01", "slug": "lets-say-theres", "url": "https://www.leafyquotes.com/carl-sagan/the-varieties-of-scientific-experience/lets-say-theres", "text": "Let's say there's a molecule that produces a religious experience... a natural molecule that the body produces whose function it is to produce religious experiences, at least on occasion? ...So let's call it \"theophorin\"...What could the selective advantage of theophorin be? ...to suit us for the quest that was, according to Dostoyevsky, to strive for nothing so incessantly and so painfully as to find someone to worship and obey.", "language": "en", "character": null, "chapter": null, "chapter_parent": null, "page": null, "verified": false, "original": null, "other_languages": [], "topics": [ { "name": "religion", "slug": "religion", "url": "https://www.leafyquotes.com/topics/religion" }, { "name": "evolution", "slug": "evolution", "url": "https://www.leafyquotes.com/topics/evolution" }, { "name": "the brain", "slug": "the-brain", "url": "https://www.leafyquotes.com/topics/the-brain" } ], "source": { "name": "Wikiquote", "url": "https://en.wikiquote.org/wiki/Carl_Sagan#The_Varieties_of_Scientific_Experience:_A_Personal_View_of_the_Search_for_God_(2006)", "license": { "label": "CC BY-SA 4.0", "url": "https://creativecommons.org/licenses/by-sa/4.0/" } }, "added_at": "2026-09-25T22:40:30" }, { "id": "d56434e2-fc82-4682-9ec9-0e6676c35490", "slug": "now-it-is-sometimes", "url": "https://www.leafyquotes.com/carl-sagan/the-varieties-of-scientific-experience/now-it-is-sometimes", "text": "Now, it is sometimes said that people who take a skeptical approach to UFOs or ancient astronauts or indeed some varieties of revealed religion are engaging in prejudice. I maintain that this is not prejudice. It is postjudice. That is, not a judgement made before examining the evidence but a judgement made after examining the evidence.", "language": "en", "character": null, "chapter": null, "chapter_parent": null, "page": null, "verified": false, "original": null, "other_languages": [], "topics": [ { "name": "prejudice", "slug": "prejudice", "url": "https://www.leafyquotes.com/topics/prejudice" }, { "name": "skepticism", "slug": "skepticism", "url": "https://www.leafyquotes.com/topics/skepticism" }, { "name": "evidence", "slug": "evidence", "url": "https://www.leafyquotes.com/topics/evidence" } ], "source": { "name": "Wikiquote", "url": "https://en.wikiquote.org/wiki/Carl_Sagan#The_Varieties_of_Scientific_Experience:_A_Personal_View_of_the_Search_for_God_(2006)", "license": { "label": "CC BY-SA 4.0", "url": "https://creativecommons.org/licenses/by-sa/4.0/" } }, "added_at": "2026-09-25T22:40:30" }, { "id": "c8315cb6-45cc-4988-a2a9-a68520d80cbb", "slug": "the-origin-of-life", "url": "https://www.leafyquotes.com/carl-sagan/the-varieties-of-scientific-experience/the-origin-of-life", "text": "The origin of life happened in significantly less than 500 million years. ...Six days was once a popular hypothesis. ...A process that happens quickly is a process that is in some sense likely... this evidence suggests that the origin of life was in some sense easy, in some sense sitting in the laws of physics and chemistry.", "language": "en", "character": null, "chapter": null, "chapter_parent": null, "page": null, "verified": false, "original": null, "other_languages": [], "topics": [ { "name": "life", "slug": "life", "url": "https://www.leafyquotes.com/topics/life" }, { "name": "evolution", "slug": "evolution", "url": "https://www.leafyquotes.com/topics/evolution" } ], "source": { "name": "Wikiquote", "url": "https://en.wikiquote.org/wiki/Carl_Sagan#The_Varieties_of_Scientific_Experience:_A_Personal_View_of_the_Search_for_God_(2006)", "license": { "label": "CC BY-SA 4.0", "url": "https://creativecommons.org/licenses/by-sa/4.0/" } }, "added_at": "2026-09-25T22:40:30" } ] }