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."
(click for a larger image)René Descartes
after a c. 1649 portrait by
Frans Hals (1580?-1666)
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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