"If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things"
About this Quote
The subtext is defensive. Descartes is writing in a Europe where inherited authority - Aristotle in the universities, the Church in public life - still sets the terms of acceptable knowledge, even as new science is making those terms look shaky. Doubt becomes a way to clear space without openly staging a political revolt. He is not advocating permanent disbelief; he is prescribing a controlled burn. Torch the underbrush of assumption so something sturdier can grow.
Context matters: Descartes wants certainty on the model of geometry. If senses mislead, traditions contradict, and arguments can be faked by a "malicious demon", then the only foundation worth building on is whatever survives maximal doubt. That is the engine behind his famous pivot to the self as a starting point. The rhetoric is clean and absolute because his goal is radical: to rebuild knowledge with proof-like confidence, not just better opinions.
Quote Details
| Topic | Truth |
|---|---|
| Source | Rene Descartes, Discourse on the Method (1637) — commonly cited source for the line urging that one should, at least once, doubt all things (standard scholarly editions/translations). |
| Cite |
Citation Formats
APA Style (7th ed.)
Descartes, Rene. (2026, January 14). If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things. FixQuotes. https://fixquotes.com/quotes/if-you-would-be-a-real-seeker-after-truth-it-is-1322/
Chicago Style
Descartes, Rene. "If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things." FixQuotes. January 14, 2026. https://fixquotes.com/quotes/if-you-would-be-a-real-seeker-after-truth-it-is-1322/.
MLA Style (9th ed.)
"If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things." FixQuotes, 14 Jan. 2026, https://fixquotes.com/quotes/if-you-would-be-a-real-seeker-after-truth-it-is-1322/. Accessed 17 Feb. 2026.















