Collected here are the written traces of courses on the concept of nature given by Maurice Merleau-Ponty at the Coll?ge de France in the 1950s-notes that provide a window on the thinking of one of the most influential philosophers of the twentieth century. In two courses distilled by a student and in a third composed of Merleau-Ponty's own notes, the ideas that animated the philosopher's lectures and that informed his later publications emerge in...