On Time and Being charts the so-called "turn" in Martin Heidegger's philosophy away from his earlier metaphysics in Being and Time to his later thoughts after "the end of philosophy." The title lecture, "Time and Being," shows how Heidegger reconceived both "Being" and "time," introducing the new concept of "the event of Appropriation" to help give his metaphysical ideas nonmetaphysical meanings. On Time and Being also contains a summary of six seminar sessions that Heidegger conducted on "Time and Being," a lecture called "The End of Philosophy and the Task of Thinking," and an autobiographical sketch of Heidegger's intellectual history in "My Way of Phenomenology."