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29 quotes by Rene Descartes

Part of a series on René Descartes Cartesianism · Rationalism Foundationalism Doubt and certainty Dream argument Cogito ergo sum Trademark argument Causal adequacy principle Mind–body dichotomy Analytic geometry Coordinate system Cartesian circle · Folium Rule of signs · Cartesian diver Balloonist theory Wax argument Res cogitans · Res extensa Works The World Discourse on the Method La Géométrie Meditations on First...
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The reading of all good books is like a conversation with the finest minds of past centuries.

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It is not enough to have a good mind; the main thing is to use it well.

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I think; therefore I am.

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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.

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Divide each difficulty into as many parts as is feasible and necessary to resolve it.

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The senses deceive from time to time, and it is prudent never to trust wholly those who have deceived us even once.

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The two operations of our understanding, intuition and deduction, on which alone we have said we must rely in the acquisition of knowledge.

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You just keep pushing. You just keep pushing. I made every mistake that could be made. But I just kept pushing.

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Perfect numbers like perfect men are very rare.

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Except our own thoughts, there is nothing absolutely in our power.

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Whenever anyone has offended me, I try to raise my soul so high that the offense cannot reach it.

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I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake.

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The first precept was never to accept a thing as true until I knew it as such without a single doubt.

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