Bertrand Russell claimed that Ludwig Wittgenstein was "perhaps the most perfect example I have ever known of genius as traditionally conceived-passionate, profound, intense, and dominating." Wittgenstein's two masterpieces, the Tractatus Logico-Philosophicus and the Philosophical Investigations, stand like opposing poles around which schools of twentieth-century analytic philosophy revolve. The Wittgenstein of the Tractatus is known as the "earlier Wittgenstein " the Wittgenstein of the Investigations is known as the "later Wittgenstein." This tutorial is an intensive, line-by-line study of the Investigations-one of the greatest (and thus, one of the most controversial) books in the history of philosophy. Aside from its overwhelming influence on late-twentieth-century philosophy and intellectual culture, any book which contains the remark, "if a lion could talk, we could not understand him," deserves serious attention. Format: weekly one-hour meetings of a tutorial pair with the instructor. Requirements: bi-weekly tutorial papers (totaling 6 per student); bi-weekly oral responses to the paper of the tutorial partner. Prerequisites: at least 3 courses in philosophy, of which Philosophy102 is required; Philosophy 103 and Philosophy 289 are highly recommended. Enrollment limit: 10 (expected: 10). Preference given to majors, prospective majors, and students firmly committed to the course.