Richard Dawkins is the world's most famous out-of-the-closet living atheist. He is also the world's most controversial evolutionary biologist. Publication of his 1976 book, "The Selfish Gene," thrust Dawkins into the limelight as the handsome, irascible, human face of scientific reductionism. The book provoked everything from outrage to glee by arguing that natural selection worked its creative powers only through genes, not species or individuals. Humans are merely "gene survival machines," he