BOOK REVIEW : The Spiritual Brain : A Neuroscientist's Case for the Existence of the Soul By Mario Beauregard and Denyse O'Leary HarperOne. 368 pp. $25.95 Neuroscience is a combat zone. It is here, in the human brain, that the final conflict between materialism and, to invent a word, soulism is being fought. For materialists, the outcome is not in doubt. Our minds, our selves, our awareness are merely the outcome of the electrical activity of the few pounds of hyperconnected matter between our ears. All claims to the contrary are wishful thinking or superstitious remnants. But the materialists have...