This book is basically two works in one volume: The first is a reproduction of an outline or note sketches that Heidegger made for himself to guide his thinking in his seminar lectures; the second is the book that already exists, "The Essence of Truth", which is a fully fleshed out phenomenological examination of Plato's cave allegory (paying very close attention to the experiences of being bounded, set free, and then subsequently returning to liberate others). Since the first is extremely sparse, it hardly makes for satisfying or indeed engaging reading material. One would need to have already a good working knowledge of Heidegger's thought processes to guess at how he moves from one thesis to the next (what reasoning he's employing between the bones). ( )