--- title: "Meaning & Key Takeaway of: I can doubt everything, except one thing…" description: "\"I can doubt everything, except one thing, and that is the very fact that I doubt. Simply put - I think, therefore I am\" — Rene Descartes" image: "https://sms4smile.com/quotes/i/6c0/ren-descartes-1376_doubt_i-can-doubt-everything-except-one-thing_2634082.png" --- # I can doubt everything, except one thing, and that is the… ![“I can doubt everything, except one thing, and that is the very fact that I doubt. Simply put - I think, therefore I am” quote by Rene Descartes](https://sms4smile.com/quotes/i/6c0/ren-descartes-1376_doubt_i-can-doubt-everything-except-one-thing_2634082.png) [Download](https://sms4smile.com/quotes/i/6c0/ren-descartes-1376_doubt_i-can-doubt-everything-except-one-thing_2634082.png) [Open image](https://sms4smile.com/quotes/i/6c0/ren-descartes-1376_doubt_i-can-doubt-everything-except-one-thing_2634082.png) > “I can doubt everything, except one thing, and that is the very fact that I doubt. Simply put - I think, therefore I am” [Rene Descartes](https://sms4smile.com/quotes/author/ren-descartes/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. Doubt is certain; the act of doubting confirms existence. **In simple terms:** I doubt, therefore I am. Key Takeaway Embrace doubt as proof of being. Themes philosophy existentialism epistemology Mood thoughtful inquisitive Type philosophical reflective When to use this quote - critical thinking - self-reflection - academic debate - personal identity Key Concepts Cartesian doubt self-awareness Questions to Reflect On - How does doubt shape your identity? - When is doubt productive? A Different Perspective Excessive doubt can lead to paralysis. ★ ★ ★ ★ ★ No ratings yet [Doubt](https://sms4smile.com/quotes/about/doubt/) [Doubt Simply](https://sms4smile.com/quotes/about/doubt-simply-788206/) [Doubt Thing](https://sms4smile.com/quotes/about/doubt-thing-1568005/) [Fact Doubt](https://sms4smile.com/quotes/about/fact-doubt-1291913/) [Facts](https://sms4smile.com/quotes/about/facts/) [Genius](https://sms4smile.com/quotes/about/genius/) [I can](https://sms4smile.com/quotes/about/i-can/) [One thing](https://sms4smile.com/quotes/about/one-thing/) [Think](https://sms4smile.com/quotes/about/think/) [Thinking](https://sms4smile.com/quotes/about/thinking/) ## Related quotes > [A man must be a born fool who voluntarily engages in controversy with Mr. Adams on a question of fact. I doubt whether he…](https://sms4smile.com/quotes/henry-clay/a-man-must-be-a-born-fool-who-voluntarily-engages-in-controversy-with/) [Henry Clay](https://sms4smile.com/quotes/author/henry-clay/) > [“In fact, without doubt, there is no faith.”](https://sms4smile.com/quotes/bruce-bickel/in-fact-without-doubt-there-is-no-faith/) [Bruce Bickel](https://sms4smile.com/quotes/author/bruce-bickel/) > [“The...act of surrender—or devotion, as the case may be—was, to him, a kind of lifeline for those who sought a quick answer and didn’t…](https://sms4smile.com/quotes/ashim-shanker/the-act-of-surrender-or-devotion-as-the-case-may-be-was-to-him-a-kind/) [Ashim Shanker](https://sms4smile.com/quotes/author/ashim-shanker/) > [“It is not our place to render a verdict on the state of another person's soul, and we will be far more effective (and…](https://sms4smile.com/quotes/patrick-q-mason/it-is-not-our-place-to-render-a-verdict-on-the-state-of-another/) [Patrick Q. 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It's the one thing I'm really good at.](https://sms4smile.com/quotes/anonymous/never-underestimate-my-ability-to-doubt-myself-it-s-the-one-thing-i-m/) [Anonymous](https://sms4smile.com/quotes/author/anonymous/) > [In spite of their obvious differences, folk art and popular art have much in common; they are easy to understand, they are romantic, patriotic,…](https://sms4smile.com/quotes/gilbert-seldes/in-spite-of-their-obvious-differences-folk-art-and-popular-art-have/) [Gilbert Seldes](https://sms4smile.com/quotes/author/gilbert-seldes/) > [The only thing that would deter me at the moment would be the idea of doing one thing for a very long time. There…](https://sms4smile.com/quotes/simon-pegg/the-only-thing-that-would-deter-me-at-the-moment-would-be-the-idea-of/) [Simon Pegg](https://sms4smile.com/quotes/author/simon-pegg/) > [As scientists the two men were contrasting types—Einstein all calculation, Rutherford all experiment ... There was no doubt that as an experimenter Rutherford was…](https://sms4smile.com/quotes/chaim-weizmann/as-scientists-the-two-men-were-contrasting-types-einstein-all/) [Chaim Weizmann](https://sms4smile.com/quotes/author/chaim-weizmann/) > [I'll tell you one thing... no doubt about it, my favorite kind of comedy is talking head comedy. I mean, if it were up…](https://sms4smile.com/quotes/adam-mckay/i-ll-tell-you-one-thing-no-doubt-about-it-my-favorite-kind-of-comedy/) [Adam McKay](https://sms4smile.com/quotes/author/adam-mckay/) > [Woman, in short, has an unconscious life, man a conscious life, and the genius the most conscious life.](https://sms4smile.com/quotes/otto-weininger/woman-in-short-has-an-unconscious-life-man-a-conscious-life-and-the/) [Otto Weininger](https://sms4smile.com/quotes/author/otto-weininger/) > [“If people fully understand you, they will think of you as a normal, if they half understand you, will think of you as a…](https://sms4smile.com/quotes/m-f-moonzajer/if-people-fully-understand-you-they-will-think-of-you-as-a-normal-if/) [M.F. Moonzajer](https://sms4smile.com/quotes/author/m-f-moonzajer/) ## More by Rene Descartes > [“My third maxim was to endeavour always to conquer myself rather than fortune, and change my desires rather than the order of the world,…](https://sms4smile.com/quotes/ren-descartes/my-third-maxim-was-to-endeavour-always-to-conquer-myself-rather-than/) [René Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [Your joy is your sorrow unmasked. And the self-same well from which your laughter rises was often-times filled with your tears.](https://sms4smile.com/quotes/ren-descartes/your-joy-is-your-sorrow-unmasked-and-the-self-same-well-from-which/) [Rene Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [So blind is the curiosity by which mortals are possessed, that they often conduct their minds along unexplored routes, having no reason to hope…](https://sms4smile.com/quotes/ren-descartes/so-blind-is-the-curiosity-by-which-mortals-are-possessed-that-they/) [Rene Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [“For to be possessed of a vigorous mind is not enough; the prime requisite is rightly to apply it. The greatest minds, as they…](https://sms4smile.com/quotes/ren-descartes/for-to-be-possessed-of-a-vigorous-mind-is-not-enough-the-prime/) [René Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [“It is useful to know something of the manners of different nations, that we may be enabled to form a more correct judgment regarding…](https://sms4smile.com/quotes/ren-descartes/it-is-useful-to-know-something-of-the-manners-of-different-nations/) [René Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [A state is better governed which has few laws, and those laws strictly observed.](https://sms4smile.com/quotes/ren-descartes/a-state-is-better-governed-which-has-few-laws-and-those-laws-strictly/) [Rene Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [ \[About Pierre de Fermat\] It cannot be denied that he has had many exceptional ideas, and that he is a highly intelligent man. For… ](https://sms4smile.com/quotes/ren-descartes/about-pierre-de-fermat-it-cannot-be-denied-that-he-has-had-many/) [Rene Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [Science is practical philosophy.](https://sms4smile.com/quotes/ren-descartes/science-is-practical-philosophy/) [Rene Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [ “And what more am I? I look for aid to the imagination. \[But how mistakenly!\] I am not that assemblage of limbs we call… ](https://sms4smile.com/quotes/ren-descartes/and-what-more-am-i-i-look-for-aid-to-the-imagination-but-how/) [René Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [“And, in fine, of false sciences I thought I knew the worth sufficiently to escape being deceived by the professions of an alchemist, the…](https://sms4smile.com/quotes/ren-descartes/and-in-fine-of-false-sciences-i-thought-i-knew-the-worth-sufficiently/) [René Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [Nothing is more fairly distributed than common sense: no one thinks he needs more of it than he already has.](https://sms4smile.com/quotes/ren-descartes/nothing-is-more-fairly-distributed-than-common-sense-no-one-thinks-he/) [Rene Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [If I go for the alternative which is false, then obviously I shall be in error; if I take the other side, then it…](https://sms4smile.com/quotes/ren-descartes/if-i-go-for-the-alternative-which-is-false-then-obviously-i-shall-be/) [Rene Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [Everything is self-evident.](https://sms4smile.com/quotes/ren-descartes/everything-is-self-evident/) [Rene Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [Neither the true nor the false roots are always real; sometimes they are imaginary; that is, while we can always imagine as many roots…](https://sms4smile.com/quotes/ren-descartes/neither-the-true-nor-the-false-roots-are-always-real-sometimes-they/) [Rene Descartes](https://sms4smile.com/quotes/author/ren-descartes/) > [It is only intelligence that is divided equally between people because everybody thinks he/she is enough wise](https://sms4smile.com/quotes/ren-descartes/it-is-only-intelligence-that-is-divided-equally-between-people/) [René Descartes](https://sms4smile.com/quotes/author/ren-descartes/) [Explore all 232 Rene Descartes quotes ](https://sms4smile.com/quotes/author/ren-descartes/) ## More Doubt quotes > [I put myself in the student's place and remember the frustrations, doubts, determination, and desires I felt when I was going through the initial…](https://sms4smile.com/quotes/ted-martinez/i-put-myself-in-the-student-s-place-and-remember-the-frustrations/) [Ted Martinez](https://sms4smile.com/quotes/author/ted-martinez/) > [Because of the womb being a central phenomenon in the feminine body, the whole psychology of woman differs: she is non-aggressive, non-inquiring, non-questioning, non-doubting,…](https://sms4smile.com/quotes/rajneesh/because-of-the-womb-being-a-central-phenomenon-in-the-feminine-body/) [Rajneesh](https://sms4smile.com/quotes/author/rajneesh/) > [I don't doubt that straight white men have identity issues and identity complexes and struggle with defining themselves.](https://sms4smile.com/quotes/justin-simien/i-don-t-doubt-that-straight-white-men-have-identity-issues-and/) [Justin Simien](https://sms4smile.com/quotes/author/justin-simien/) > [“Where there is doubt (shanka), there is misery. The moment one begins to doubt the knowledge that, 'I am Chandubhai,' misery arises. Once one…](https://sms4smile.com/quotes/dada-bhagwan/where-there-is-doubt-shanka-there-is-misery-the-moment-one-begins-to/) [Dada Bhagwan](https://sms4smile.com/quotes/author/dada-bhagwan/) > [We know accurately only when we know little, with knowledge doubt increases.](https://sms4smile.com/quotes/johann-wolfgang-von-goethe/we-know-accurately-only-when-we-know-little-with-knowledge-doubt/) [Johann Wolfgang von Goethe](https://sms4smile.com/quotes/author/johann-wolfgang-von-goethe/) > [There is no doubt in my mind and I know in my time, there will be a Canadian basketball player playing for Toronto Raptors, 100%](https://sms4smile.com/quotes/masai-ujiri/there-is-no-doubt-in-my-mind-and-i-know-in-my-time-there-will-be-a/) [Masai Ujiri](https://sms4smile.com/quotes/author/masai-ujiri/) > [How could you feel worthless when God has honoured you by creating you and choosing you to be with Him, in this life and…](https://sms4smile.com/quotes/yasmin-mogahed/how-could-you-feel-worthless-when-god-has-honoured-you-by-creating/) [Yasmin Mogahed](https://sms4smile.com/quotes/author/yasmin-mogahed/) > [“Let no one hope to find in contemplation an escape from conflict, from anguish or from doubt. On the contrary, the deep, inexpressible certitude…](https://sms4smile.com/quotes/thomas-merton/let-no-one-hope-to-find-in-contemplation-an-escape-from-conflict-from/) [Thomas Merton](https://sms4smile.com/quotes/author/thomas-merton/) > [“Two powerful, little words I've learned to use when facing challenges, fears, and doubts— so what? ”](https://sms4smile.com/quotes/richelle-e-goodrich/two-powerful-little-words-i-ve-learned-to-use-when-facing-challenges/) [Richelle E. Goodrich](https://sms4smile.com/quotes/author/richelle-e-goodrich/) > [For diplomacy to be effective, words must be credible - and no one can now doubt the word of America.](https://sms4smile.com/quotes/george-w-bush/for-diplomacy-to-be-effective-words-must-be-credible-and-no-one-can/) [George W. Bush](https://sms4smile.com/quotes/author/george-w-bush/) > [Vision motivates, sustains and dispels doubt.](https://sms4smile.com/quotes/thomas-young/vision-motivates-sustains-and-dispels-doubt/) [Thomas Young](https://sms4smile.com/quotes/author/thomas-young/) > [One may not doubt that, somehow Good Shall come of Water and of Mud; And sure, the reverent eye must see A purpose in…](https://sms4smile.com/quotes/rupert-brooke/one-may-not-doubt-that-somehow-good-shall-come-of-water-and-of-mud/) [Rupert Brooke](https://sms4smile.com/quotes/author/rupert-brooke/) > [Let smiles overshadow sadness. Let faith make you believe. Let confidence wash away doubts. Let love complete your life.](https://sms4smile.com/quotes/ritu-ghatourey/let-smiles-overshadow-sadness-let-faith-make-you-believe-let/) [Ritu Ghatourey](https://sms4smile.com/quotes/author/ritu-ghatourey/) > [When in doubt, suggest that a subcommittee be appointed.](https://sms4smile.com/quotes/harry-chapman/when-in-doubt-suggest-that-a-subcommittee-be-appointed/) [Harry Chapman](https://sms4smile.com/quotes/author/harry-chapman/) > [“Those who contemplate never escape the doubt.”](https://sms4smile.com/quotes/henning-mankell/those-who-contemplate-never-escape-the-doubt/) [Henning Mankell](https://sms4smile.com/quotes/author/henning-mankell/) [Browse all 9,582 Doubt quotes ](https://sms4smile.com/quotes/about/doubt/) ```json { "@context": "https://schema.org", "@graph": [ { "@type": "Quotation", "text": "I can doubt everything, except one thing, and that is the very fact that I doubt. 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