First published in 1979 but never available in English until now, Ego Sum challenges, through a careful and unprecedented reading of Descartes's writings, the picture of Descartes as the father of modern philosophy: the thinker who founded the edifice of knowledge on the absolute self-certainty of a Subject fully transparent to itself. While other theoretical discourses, such as psychoanalysis, have also attempted to subvert this Subject, Nancy...