This popular selection of Wittgenstein's key writings has now been updated to include new material relevant to recent debates about the philosopher. This title follows the evolution of Wittgenstein's philosophical thought from the Tractatus Logico-Philosophicus through to the Philosophical Investigations. Excerpts are arranged by topic and introduce readers to all the central concerns of Wittgenstein's philosophy. Now, this title includes a new chapter on 'Sense, Nonsense and Philosophy' incorporating material relevant to recent debates about Wittgenstein.