In Alan Lightman's new book, a verse narrative, we meet a man who has lost his faith in all things following a mysterious personal tragedy. After decades of living "hung like a dried fly," emptied and haunted by his past, the narrator awakens one morning revitalized and begins a Dante-like journey to find something to believe in, first turning to the world of science and then to the world of philosophy, religion, and human life. As his personal story...