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.