For a generation now, public debate has been corroded by a shrill, narrow derision of religion in the name of an often vaguely understood “science.” John Gray’s stimulating and enjoyable new book, , describes the complex, dynamic world of older atheisms, a tradition that is, he writes, in many ways intertwined with and as rich as religion itself. Along a spectrum that ranges from the convictions of “God-haters” like the Marquis de Sade to the mysticism of Arthur Schopenhauer, from Bertrand Russell’s search for truth in mathematics to secular political religions like Jacobinism and Nazism, Gray explores the various ways great minds have attempted to understand the questions of salvation, purpose, progress, and evil. The result is a book that sheds an extraordinary light on what it is to be human.