Descartes, René 1596-1650. French mathematician, philosopher, and scientist that is considered the daddy of analytic geometry in addition to president of modern rationalism. His primary works, Meditations on very first Philosophy (1641) and Principles of Philosophy (1644), include the popular dictum "I think, for that reason Im.”
A French philosopher and mathematician, which existed from 1596 to 1650.
René Descartes, a French philosopher and mathematician, created 159, passed away 1650. See biography, under.