Volume 35 of Heidegger's Complete Works comprises a lecture course given at the University of Freiburg in 1932, five years after the publication of . During this period, Heidegger was at the height of his creative powers, which are on full display in this clear and imaginative text. In it, Heidegger leads his students in a close reading of two of the earliest philosophical source documents, fragments by Greek thinkers Anaximander and Parmenides. Heidegger develops their common theme of Being and non-being and shows that the question of Being is indeed the origin of Western philosophy. His engagement with these Greek texts is as much of a return to beginnings as it is a potential reawakening of philosophical wonder and inquiry in the present.