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De omnibus dubitandum

Rene Descartes

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Rene Descartes
Age: 53 †
Born: 1596
Born: March 31
Died: 1650
Died: February 11
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La Haye en Touraine
Descartes
Cartesius
Renatus Cartesius
Omnibus
Philosophical

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There is a difference between happiness, the supreme good, and the final end or goal toward which our actions ought to tend. For happiness is not the supreme good, but presupposes it, being the contentment or satisfaction of the mind which results from possessing it.
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A person has two passions for love and abhorrence. A big disposition to excessiveness has just a love, because it is more ardent and stronger.
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He who hid well, lived well.
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How can you be certain that your whole life is not a dream?
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If ... it is not in my power to arrive at the knowledge of any truth, I may at least do what is in my power, namely, suspend judgement.
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Here I beg you to observe in passing that the scruples that prevented ancient writers from using arithmetical terms in geometry, and which can only be a consequence of their inability to perceive clearly the relation between these two subjects, introduced much obscurity and confusion into their explanations.
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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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...it is certain that I am really distinct from my body, and can exist without it.
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We call infinite that thing whose limits we have not perceived, and so by that word we do not signify what we understand about a thing, but rather what we do not understand.
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In God there is an infinitude of things which I cannot comprehend, nor possibly even reach in any way by thought for it is the nature of the infinite that my nature, which is finite and limited, should not comprehend it.
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The only secure knowledge is that I exist.
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And thereby make ourselves, as it were, the lords and masters of nature.
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Common sense is the best distributed thing in the world, for we all think we possess a good share of it.
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There is nothing more ancient than the truth.
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Except our own thoughts, there is nothing absolutely in our power.
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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.
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Your joy is your sorrow unmasked. And the self-same well from which your laughter rises was often-times filled with your tears.
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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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The principal effect of the passions is that they incite and persuade the mind to will the events for which they prepared the body.
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Science is practical philosophy.
Rene Descartes