The master's programme in Theoretical Philosophy at Leiden University offers students the opportunity to investigate fundamental questions concerning the nature of reality using the tools of analytic philosophy. The programme is taught by members of the Centre for Theoretical Philosophy at Leiden University. We are a friendly and collegial group of internationally acclaimed researchers and teachers, concentrating on metaphysics and the philosophy of science. Seminars are small, and students have many opportunities to participate in the research activities of the Centre such as our invited speaker series and internal lunch seminars.