# René Descartes

René Descartes was a French philosopher, mathematician, and scientist who founded modern rationalist philosophy with his Meditations on First Philosophy (1641), in which his famous declaration Cogito, ergo sum ("I think, therefore I am") established subjective consciousness as the bedrock of certainty. He also invented analytic geometry, bridging algebra and Euclidean geometry, and made significant contributions to optics and physiology. Cartesian dualism — the separation of mind and matter — dominated philosophical and scientific discourse for centuries.

## Quick Facts

- **Born:** March 31, 1596
- **Birthplace:** La Haye en Touraine, France
- **Nationality:** French
- **Occupation:** Philosophy / Mathematics
- **Category:** Scholars & Educators
- **Also Known As:** Father of Modern Philosophy, Father of Analytic Geometry

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Source: https://peoplebio.info/p/rene-descartes