The fourth conversation in our ongoing series with the distinguished Harvard political philosopher considers the political philosopher Leo Strauss (1899 - 1973) and the "Straussian school" of philosophy he founded. Mansfield and Kristol discuss key themes in Strauss's work, including esoteric writing, the quarrel between Ancients and Moderns, and the theological-political problem. Mansfield also reflects on three outstanding students of Strauss: Seth Benardete, Allan Bloom, and Ernest Fortin.