Alain Badiou takes on the standard bearer of the "linguistic turn? in modern philosophy and anatomizes the "antiphilosophy? of Ludwig Wittgenstein. In the course of his interrogation of Wittgenstein's thinking, Badiou refines his own definitions of the universal truths that govern his work. Bruno Bosteels's introduction argues that a continuing dialogue with Wittgenstein is inescapable for contemporary philosophy.