René Descartes (March 31, 1596 - Febraury 11, 1650) By CSummers47 1637 "Je Pense, Donc je Suis" Please see submission box. 1637 La Géométrie Please see submission box. 1644 Principles of Philosophy- Laws of Nature Please see submission box. 1644 Principles Of Philosophy- Vortex Theory Please see submission box.
