RENÉ DESCARTES (1596-1650) I am a thing which thinks René Descartes (1596-1650), an important French philosopher, mathematician, and scientist, is considered the father of modern philosophy. Under his influence, philosophy became centered on epistemology (the study of knowledge) for three centuries. The question “What do I really know?” became a starting point for many philosophies after him. Especially influential were his idea that knowledge of the self is the foundation of all other knowledge, the search for the foundation of knowledge...