René Descartes on certainty
René Descartes (1596–1650) approaches certainty within Rationalism. Methodic doubt strips away uncertain beliefs until the cogito—thinking existence—stands firm. Clear and distinct perception, guaranteed by a non-deceiving God, rebuilds knowledge of mind, God, and material nature. On this page, the archive isolates English passages where that project meets certainty most directly—useful for searches such as “rené descartes quotes on certainty.”
How to use this page
Start with the shortest passage, then compare tone across sources. Return to the René Descartes thinker page for biography and to the certainty theme for other voices on the same question.
Frequently asked
What did René Descartes say about certainty?
The quotations below are the archive’s curated answer: English renderings selected for clarity and attribution, not a complete corpus.
Where else should I read after rené descartes on certainty?
Related themes: Self , Knowledge , Freedom , Nature , Reason , Life .