Oliver Sacks’s The Man Who Mistook His Wife for a Hat tells the stories of individuals afflicted with perceptual and intellectual disorders: patients who have lost their memories and with them the greater part of their pasts; who are no longer able to recognize people and common objects; whose limbs seem alien to them; who lack some skills yet are gifted with uncanny artistic or mathematical talents. In Dr. Sacks’s splendid and sympathetic telling, his patients are deeply human and his tales are studies of struggles against incredible adversity. A great healer, Sacks never loses sight of medicine’s ultimate responsibility: “the suffering, afflicted, fighting human subject.”