"And, finally, what about the reality of spiritual experience? Are saints and madmen equally deluded? Are witches' sabbats the same as alien abductions? Is exorcism merely a form of psychotherapy, or is it something more? Something... other? What is evil? Can everything we experience as human beings be explained away by a tranquil, Carl Sagan-like belief in science? Was Carl comforted in his final moments by reciting the Second Law of Thermodynamics... or by a remembered prayer of childhood? Is science a "candle in the dark"?... Or is it simply whistling in the dark?"