What Dawkins brings to this approach is a couple of fresh arguments—no mean achievement, considering how thoroughly these issues have been debated over the centuries—and a great deal of passion. The book fairly crackles with brio. Yet reading it can feel a little like watching a Michael Moore movie. There is lots of good, hard-hitting stuff about the imbecilities of religious fanatics and frauds of all stripes, but the tone is smug and the logic occasionally sloppy.

