This collection includes thirteen original essays that provide a comprehensive overview of the various ways in which Wittgenstein appeals to the limit of language at different stages of his philosophical development. The essays connect the idea of a limit of language to the most important themes discussed by Wittgenstein—his conception of logic and grammar, the method of philosophy, the nature of the subject, and the foundations of knowledge—as well as his views on ethics, aesthetics, and religion. The essays also relate Wittgenstein’s thought to his contemporaries, including Carnap, Frege, Heidegger, Levinas, and Moore.