Written over the last 18 months of his life and inspired by his interest in G. E. Moore's defense of common sense, this much discussed volume collects Wittgenstein's reflections on knowledge and certainty, on what it is to know a proposition for sure.

"For an acquaintance with the thought of Heidegger, What Is Called Thinking? is as important as Being and Time. It is the only systematic presentation of the thinker's late philosophy and . . . it is perhaps the most exciting of his books."--Hannah Arendt