René Descartes
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René Descartes was a French polymath, active across philosophy, including metaphysics, epistemology, ethics, and the philosophy of science; theology; mathematics, in which he connected the previously
Portrait after Frans Hals
Descartes was born in La Haye en Touraine.
Portrait of René Descartes by Jan Baptist Weenix, 1647–1649
Portrait of René Descartes by Pieter Nason (1647)
Cogito, ergo sum
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The Latin cogito, ergo sum, usually translated into English as "I think, therefore I am", is the "first principle" of the philosophy of the French scientist and philosopher René Descartes. He original
René Descartes
…so far as to assert that he will write on this topic "as if no one had written on these matters before." His best-known philosophical statement is "cogito, ergo sum" ("I think, therefore I am", French: "Je pense, donc je suis"). He was one of the key figures in the Scientific Revolution, and his Meditations on First…
"ego cogito, ergo sum" with margin note in original (1644) Principia Philosophae