In order to seek truth, it is necessary once in the course of our life to doubt, as far as possible, of all things
RENE DESCARTESTo know what people really think, pay attention to what they do, rather than what they say.
More Rene Descartes Quotes
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I think; therefore I am.
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All that is necessary to right action is right judgment, and to the best action the most correct judgment.
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I doubt, therefore I think, therefore I am.
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For to be possessed of a vigorous mind is not enough; the prime requisite is rightly to apply it.
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Each problem that I solved became a rule which served afterwards to solve other problems.
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To know what people really think, pay attention to what they do, rather than what they say.
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Except our own thoughts, there is nothing absolutely in our power.
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But what then am I? A thing that thinks. What is that? A thing that doubts, understand, affirms, denies, wills, refuses, and that also imagines and senses.
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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.
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With me, everything turns into mathematics.
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The greatest minds are capable of the greatest vices as well as of the greatest virtues.
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Masked, I advance.
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To think? That’s it. It is thought. This alone cannot be detached from me. I am, I exist; that is certain.
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That we conduct our thoughts along different ways, and do not fix our attention on the same objects.
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It is only prudent never to place complete confidence in that by which we have even once been deceived.
RENE DESCARTES






