Descartes René

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Des·cartes

 (dā-kärt′), René 1596-1650.
French mathematician, philosopher, and scientist who is considered the father of analytic geometry and the founder of modern rationalism. His main works, Meditations on First Philosophy (1641) and Principles of Philosophy (1644), include the famous dictum "I think, therefore I am."

Des·cartes

(dā-kärt′), René 1596-1650.
French mathematician and philosopher. He determined that the position of a point can be defined by coordinates, a discovery that laid the foundation for analytic geometry.