In Deep Rhythm and the Riddle of Eternal Life, John S. Dunne's twentieth book, he examines the end of earthly life and the prospect of eternal life. He begins with two questions: Is death an event of life? Is death lived through? If we answer yes to both questions, then we face "the riddle of eternal life." This book explores that riddle. Dunne finds his answer in the Gospel of John, with its three great metaphors of life, light,...