Wittgenstein's Metaphysics offers an interpretation of the fundamental ideas of Ludwig Wittgenstein. It takes issue with the conventional view that after 1930 Wittgenstein rejected the philosophy of the Tractatus and developed a wholly new conception of philosophy. By tracing the evolution of Wittgenstein's ideas Cook shows that they are neither as original nor as difficult as is often supposed. Wittgenstein was essentially an empiricist, and the difference between his early views (as set forth in the Tractatus) and the later views (as expounded in the Philosophical Investigations) lies chiefly in the fact that after 1930 he replaced his version of reductionism with something subtler. Nevertheless, he ended where he began, as an empiricist armed with a theory of meaning.