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

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Engraved portrait of René Descartes, facing right

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

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About René Descartes

René Descartes (March 31, 1596 – February 11, 1650) was a highly influential French philosopher, mathematician, physicist and writer. He is known for his influential arguments for substance dualism, where mind and body are considered to have distinct essences, one being characterized by thought, the other by spatial extension. He has been dubbed the "Father of Modern Philosophy" and the "Father of Modern Mathematics." He is also known as Cartesius.

Biography information from Wikiquote · Portrait adapted from Wikimedia Commons, After Frans Hals (Public domain / CC0)

Also Known As

Alternative Names: Descartes Cartesius Renatus Cartesius Renė Dekartas

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punto de partida es la duda metódica. La duda cartesiana no es escepticismo, sino un procedimiento dialéctico de investigación, encaminado a desprender y aislar la primera verdad evidente, la primera idea clara y distinta, la primera naturaleza simple.

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No doubt you know that Galileo had been convicted not long ago by the Inquisition, and that his opinion on the movement of the Earth had been condemned as heresy. Now I will tell you that all things I explain in my treatise, among which is also that same opinion about the movement of the Earth, all depend on one another, and are based upon certain evident truths. Nevertheless, I will not for the world stand up against the authority of the Church. ...I have the desire to live in peace and to continue on the road on which I have started.

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