René Descartes

René Descartes

French philosopher, mathematician
31 March 1596 — 11 February 1650

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An optimist may see a light where there is none, but why must the pessimist always run to blow it out?

I can doubt everything, except one thing, and that is the very fact that I doubt.

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

In order to seek truth, it is necessary once in the course of our life to doubt, as far as possible, of all things.

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