This revised edition of Sir Anthony Kennys classic work on Wittgenstein contains a new introduction which covers developments in Wittgenstein scholarship since the book was first published. Widely praised for providing a lucid and historically informed account of Wittgensteins core philosophical concerns. Demonstrates the continuity between Wittgensteins early and later writings. Provides a persuasive argument for the unity of Wittgensteins thought. Kenny also assesses Wittgensteins influence in the latter part of the twentieth century.