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The only secure knowledge is that I exist.

Rene Descartes

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Rene Descartes
Age: 53 †
Born: 1596
Born: March 31
Died: 1650
Died: February 11
Astronomer
Correspondent
Mathematician
Mechanical Automaton Engineer
Military Personnel
Music Theorist
Musicologist
Philosopher
Physicist
La Haye en Touraine
Descartes
Cartesius
Renatus Cartesius
Knowledge
Philosophical
Secure
Exist

More quotes by 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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How can you be certain that your whole life is not a dream?
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Instead I ought to be grateful to Him who never owed me anything for having been so generous to me, rather than think that He deprived me of those things or has taken away from me whatever He did not give me.
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Reason is nothing without imagination.
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It is contrary to reasoning to say that there is a vacuum or space in which there is absolutely nothing.
Rene Descartes
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I experienced in myself a certain capacity for judging which I have doubtless received from God, like all the other things that I possess and as He could not desire to deceive me, it is clear that He has not given me a faculty that will lead me to err if I use it aright.
Rene Descartes
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[About Pierre de Fermat] It cannot be denied that he has had many exceptional ideas, and that he is a highly intelligent man. For my part, however, I have always been taught to take a broad overview of things, in order to be able to deduce from them general rules, which might be applicable elsewhere.
Rene Descartes
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It is not enough to have a good mind. The main thing is to use it well.
Rene Descartes
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For how do we know that the thoughts which occur in dreaming are false rather than those others which we experience when awake, since the former are often not less vivid and distinct than the latter?
Rene Descartes
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Intuitive knowledge is an illumination of the soul, whereby it beholds in the light of God those things which it pleases Him to reveal to us by a direct impression of divine clearness.
Rene Descartes
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And I shall always hold myself more obliged to those by whose favour I enjoy uninterrupted leisure than to any who might offer me the most honourable positions in the world.
Rene Descartes
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There is nothing more ancient than the truth.
Rene Descartes
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I can doubt everything, except one thing, and that is the very fact that I doubt. Simply put - I think, therefore I am
Rene Descartes
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He who hid well, lived well.
Rene Descartes
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Situations in life often permit no delay and when we cannot determine the course which is certainly best, we must follow the one which is probably the best. This frame of mind freed me also from the repentance and remorse commonly felt by those vacillating individuals who are always seeking as worthwhile things which they later judge to be bad.
Rene Descartes
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Nothing comes out of nothing.
Rene Descartes
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There is a great difference between mind and body insomuch as body is by nature always divisible, and the mind is entirely indivisible.
Rene Descartes
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Intuition is the undoubting conception of a pure and attentive mind, which arises from the light of reason alone, and is more certain than deduction.
Rene Descartes
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Everything is self-evident.
Rene Descartes
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Even those who have the weakest souls could acquire absolute mastery over all their passions if we employed sufficient ingenuity in training and guiding them.
Rene Descartes