Vienna, 1714: Late in life, Gottfried Wilhelm Leibniz, the universal genius of his time, puts down his pen and declares his description of the universe to be complete. In the evening, he sits in his study room among letters, books, and manuscripts as his young friend Theodor comes for a visit. Theodor is bothered by one question: Why is there evil? And why do people commit crimes? With an example from ancient Greek mythology, Leibniz develops his...