Jonah Lehrer's smart, elegantly written little book expresses an appealing faith that art and science offer different but complementary views of the world. His main argument, that artists have often intuited essential truths about human nature that are later verified by scientific research, is hardly new. But he pursues this argument with freshness and enthusiasm in eight enjoyable case studies studded with arresting sentences that voice the 25-year-old author's delighted sense of discovery.