Dreams have been a source of delight and terror for as long as people have kept records of their thought. Whether dreams are the key to the unconscious, as Freud proposed, or a way of wiping clean the mental slate, as Dr. Francis Crick's theory suggests, they have filled the pages of numerous diaries and been an integral part of literary masterworks such as The Divine Comedy and Finnegan's Wake. In this rich anthology, Stephen Brook has collected...