The collapse of positivism and its attendant verification principle of meaning was undoubtedly the most important philosophical event of the twentieth century. Their demise heralded a resurgence of metaphysics, along with other traditional problems of philosophy that verificationism had suppressed. Accompanying this resurgence has come something new and altogether unanticipated: a renaissance in Christian philosophy. The face of Anglo-American philosophy has been transformed as a result. Theism is on the rise; atheism is on the decline. Atheism, although perhaps still the dominant viewpoint at the American university, is a philosophy in retreat.