Franz Kafka met Felice Bauer in August 1912, at the home of his friend Max Brod. Energetic, down-to-earth, and life-affirming, the twenty-five-year-old secretary was everything Kafka was not, and he was instantly smitten. Because he was living in Prague and she in Berlin, his courtship was largely an epistolary one--passionate, self-deprecating, and anxious letters sent almost daily, sometimes even two or three times a day. But soon after their engagement...