Definition of Descartes, René in English:
Descartes, René
proper noun
(1596–1650), French philosopher, mathematician, and man of science. He concluded that everything was open to doubt except conscious experience and existence as a necessary condition of this: “Cogito, ergo sum” (I think, therefore I am). In mathematics, he developed the use of coordinates to locate a point in two or three dimensions.
Pronunciation
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