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It is to the body alone that we should attribute everything that can be observed in us to oppose our reason.
Rene Descartes
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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?
Rene Descartes
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The only thing we have power over in the universe is our own thoughts.
Rene Descartes
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I suppose therefore that all things I see are illusions; I believe that nothing has ever existed of everything my lying memory tells me. I think I have no senses. I believe that body, shape, extension, motion, location are functions. What is there then that can be taken as true? Perhaps only this one thing, that nothing at all is certain.
Rene Descartes
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Everybody thinks himself so well supplied with common sense that even those most difficult to please. . . never desire more of it than they already have.
Rene Descartes
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The mind effortlessly and automatically takes in new ideas, which remain in limbo until verified or rejected by conscious, rational analysis.
Rene Descartes
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With me, everything turns into mathematics.
Rene Descartes
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I know that I exist; the question is, What is this 'I' that 'I' know.
Rene Descartes
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Common sense is the most fairly distributed thing in the world, for each one thinks he is so well-endowed with it that even those who are hardest to satisfy in all other matters are not in the habit of desiring more of it than they already have.
Rene Descartes
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It is possible that I am dreaming right now and that all of my perceptions are false.
Rene Descartes
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The reading of all good books is indeed like a conversation with the noblest men of past centuries who were the authors of them, nay a carefully studied conversation, in which they reveal to us none but the best of their thoughts.
Rene Descartes
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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.
Rene Descartes
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And thereby make ourselves, as it were, the lords and masters of nature.
Rene Descartes
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When writing about transcendental issues, be transcendentally clear.
Rene Descartes
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For I found myself embarrassed with so many doubts and errors that it seemed to me that the effort to instruct myself had no effect other than th eincreasing discovery of my own ignorance.
Rene Descartes
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There is a little gland in the brain in which the soul exercises its functions in a more particular way than in the other parts.
Rene Descartes
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Nothing is more fairly distributed than common sense: no one thinks he needs more of it than he already has.
Rene Descartes
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As I considered the matter carefully it gradually came to light that all those matters only were referred to mathematics in which order and measurements are investigated, and that it makes no difference whether it be in numbers, figures, stars, sounds or any other object that the question of measurement arises. I saw consequently that there must be some general science to explain that element as a whole which gives rise to problems about order and measurement, restricted as these are to no special subject matter. This, I perceived was called 'universal mathematics'.
Rene Descartes
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Desire awakens only to things that are thought possible.
Rene Descartes
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Sensations are nothing but confused modes of thinking.
Rene Descartes
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If I simply refrain from making a judgment in cases where I do not perceive the truth with sufficient clarity and distinctness, then it is clear that I am behaving correctly and avoiding error.
Rene Descartes
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Everything is self-evident.
Rene Descartes
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We never understand a thing so well,and make it our own, as when we have discovered it for ourselves.
Rene Descartes
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God alone is the author of all the motions in the world.
Rene Descartes
