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."

"This collection may well vie with Vom Wesen des Grundes and Identität and Differenz as definitive statements of Heidegger's ontology."—Library Journal

"The title of the English translation is that of the lead essay, the highly celebrated lecture which Heidegger gave in 1962 and which bears the same title as the never published 'third division' of the 'first half' of Being and Time. This lecture is perhaps the most significant document to be added to the Heideggerian corpus since the Letter of Humanism. . . . Stambaugh's translation is superb."—Stanley O. Hoerr and staff, The Review of Metaphysics