"This meticulous translation...offers a penetrating glimpse into certain uncharted waters in the development of German thought." - "Review of Metaphysics." Available for the first time in English, this text of a 1930ETH1931 lecture course on the opening chapters of Hegel's "Phenomenology of Spirit" contains some of Heidegger's most crucial statements about temporality, ontological difference and dialectic, and being and time in Hegel. It is a key text for students of Heidegger and Hegel and of contemporary Continental philosophy.