--- title: "Meaning & Key Takeaway of: For years I've been stressing with regard…" description: "\"For years I've been stressing with regard to UFOs that extraordinary claims require extraordinary evidence.\" — Carl Sagan" image: "https://sms4smile.com/quotes/i/72e/carl-sagan-160_atheism_for-years-i-ve-been-stressing-with-regar_1415742.jpg" --- # For years I've been stressing with regard to UFOs that… ![“For years I've been stressing with regard to UFOs that extraordinary claims require extraordinary evidence.” quote by Carl Sagan](https://sms4smile.com/quotes/i/72e/carl-sagan-160_atheism_for-years-i-ve-been-stressing-with-regar_1415742.jpg) [Download](https://sms4smile.com/quotes/i/72e/carl-sagan-160_atheism_for-years-i-ve-been-stressing-with-regar_1415742.jpg) [Open image](https://sms4smile.com/quotes/i/72e/carl-sagan-160_atheism_for-years-i-ve-been-stressing-with-regar_1415742.jpg) > “For years I've been stressing with regard to UFOs that extraordinary claims require extraordinary evidence.” [Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. Emphasizes that extraordinary claims, like UFOs, demand equally extraordinary evidence before acceptance. **In simple terms:** Extraordinary claims need strong evidence. Key Takeaway Demand rigorous proof for unusual claims. Themes skepticism science evidence critical thinking UFOs Mood cautious analytical Type scientific philosophical When to use this quote - Evaluating conspiracy theories - media literacy - academic research - policy making Key Concepts Epistemology burden of proof scientific method Questions to Reflect On - What evidence would convince you? - How do you assess credibility? A Different Perspective People may dismiss evidence due to bias. ★ ★ ★ ★ ★ No ratings yet [Atheism](https://sms4smile.com/quotes/about/atheism/) [Claims](https://sms4smile.com/quotes/about/claims/) [Evidence](https://sms4smile.com/quotes/about/evidence/) [Extraordinary](https://sms4smile.com/quotes/about/extraordinary/) [Extraordinary Claims](https://sms4smile.com/quotes/about/extraordinary-claims-1129971/) [Extraordinary Evidence](https://sms4smile.com/quotes/about/extraordinary-evidence-1875384/) [Positive atheism](https://sms4smile.com/quotes/about/positive-atheism/) [Regard](https://sms4smile.com/quotes/about/regard/) [Regard Ufos](https://sms4smile.com/quotes/about/regard-ufos-5001503/) [Stress](https://sms4smile.com/quotes/about/stress/) [Ufo](https://sms4smile.com/quotes/about/ufo/) [Ufos](https://sms4smile.com/quotes/about/ufos/) [Ufos Extraordinary](https://sms4smile.com/quotes/about/ufos-extraordinary-5001502/) [Years](https://sms4smile.com/quotes/about/years/) ## Related quotes > [It is an understatement to say that the time has arrived for a serious and open international dialogue regarding the possibility of future interplanetary…](https://sms4smile.com/quotes/steven-m-greer/it-is-an-understatement-to-say-that-the-time-has-arrived-for-a/) [Steven M. Greer](https://sms4smile.com/quotes/author/steven-m-greer/) > [What counts is not what sounds plausible, not what we would like to believe, not what one or two witnesses claim, but only what…](https://sms4smile.com/quotes/carl-sagan/what-counts-is-not-what-sounds-plausible-not-what-we-would-like-to/) [Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/) > [I believe that the extraordinary should be pursued. But extraordinary claims require extraordinary evidence.](https://sms4smile.com/quotes/carl-sagan/i-believe-that-the-extraordinary-should-be-pursued-but-extraordinary/) [Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/) > [Extraordinary claims require extraordinary evidence.](https://sms4smile.com/quotes/carl-sagan/extraordinary-claims-require-extraordinary-evidence/) [Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/) > [Extraordinary claims demand extraordinary evidence](https://sms4smile.com/quotes/carl-sagan/extraordinary-claims-demand-extraordinary-evidence/) [Carl Sagan](https://sms4smile.com/quotes/author/carl-sagan/) > [Extraordinary claims require extraordinary evidence, and it is my job, my responsibility, as an astronomer to remind people that alien hypotheses should always be…](https://sms4smile.com/quotes/tabetha-s-boyajian/extraordinary-claims-require-extraordinary-evidence-and-it-is-my-job/) [Tabetha S. 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That's why they're always seen in Arizona, Scotland, and New…](https://sms4smile.com/quotes/alice-cooper/what-most-people-don-t-understand-is-that-ufos-are-on-a-cosmic/) [Alice Cooper](https://sms4smile.com/quotes/author/alice-cooper/) > [ I would do it \[study UFOs\], but before agreeing to do it, we must insist upon full access to discs recovered. For instance in… ](https://sms4smile.com/quotes/j-edgar-hoover/i-would-do-it-study-ufos-but-before-agreeing-to-do-it-we-must-insist/) [J. Edgar Hoover](https://sms4smile.com/quotes/author/j-edgar-hoover/) > [The proponents of UFOs offer up impressive quantities of principally eyewitness data, which although largely subjective and circumstantial in nature, is nevertheless quite intriguing……](https://sms4smile.com/quotes/peter-davenport/the-proponents-of-ufos-offer-up-impressive-quantities-of-principally/) [Peter Davenport](https://sms4smile.com/quotes/author/peter-davenport/) > [“If aliens do not exist in this universe, then you do not exist in this universe as well! If you exist in this universe,…](https://sms4smile.com/quotes/mehmet-murat-ildan/if-aliens-do-not-exist-in-this-universe-then-you-do-not-exist-in-this/) [Mehmet Murat ildan](https://sms4smile.com/quotes/author/mehmet-murat-ildan/) ## 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. 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