
Portrait: After Frans Hals · Public domain · Wikimedia Commons
Early Modern · Rationalist
René Descartes
1596–1650
Born in La Haye en Touraine, France
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“I think, therefore I am.”
Doubted everything he could, to find what was certain.
Mind and body are two different kinds of substance.
Invented Cartesian coordinates, joining algebra and geometry.
Died in Stockholm, after dawn tutoring sessions for Queen Christina.


