This is a course on the later philosophy of Wittgenstein. One of the aims of the course is to provide a solid understanding of the Philosophical Investigations and other of Wittgenstein's later writings. A second aim is to illustrate the continuing relevance of Wittgenstein's thought by bringing it to bear on questions of current philosophical interest. The last time this course was taught, the emphasis was on the bearing of Wittgenstein's thought on issues in philosophy of mind. This time the emphasis will likely be on the bearing of Wittgenstein's thought on issues in philosophy of language.