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I am accustomed to sleep and in my dreams to imagine the same things that lunatics imagine when awake.

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
Dreams
Imagine
Sleep
Dream
Things
Lunatics
Accustomed
Awake

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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.
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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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A state is better governed which has few laws, and those laws strictly observed.
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We do not describe the world we see, we see the world we can describe.
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Doubt is the origin of wisdom
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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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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.
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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.
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Let whoever can do so deceive me, he will never bring it about that I am nothing, so long as I continue to think I am something.
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But possibly I am something more than I suppose myself to be.
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So blind is the curiosity by which mortals are possessed, that they often conduct their minds along unexplored routes, having no reason to hope for success, but merely being willing to risk the experiment of finding whether the truth they seek lies there.
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... moral certainty is certainty which is sufficient to regulate our behaviour, or which measures up to the certainty we have on matters relating to the conduct of life which we never normally doubt, though we know that it is possible, absolutely speaking, that they may be false.
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In order to improve the mind, we ought less to learn, than to contemplate.
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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.
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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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Neither the true nor the false roots are always real sometimes they are imaginary that is, while we can always imagine as many roots for each equation as I have assigned, yet there is not always a definite quantity corresponding to each root we have imagined.
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I should consider that I know nothing about physics if I were able to explain only how things might be, and were unable to demonstrate that they could not be otherwise.
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It's the familiar love-hate syndrome of seduction: I don't really care what it is I say, I care only that you like it.
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I accept no principles of physics which are not also accepted in mathematics.
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In the matter of a difficult question it is more likely that the truth should have been discovered by the few than by the many.
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