From the author of Gratitude and On the Move, a final volume of essays that showcases Sacks's broad range of interests--from his passions for ferns, swimming, and horsetails, to his final case histories exploring schizophrenia, dementia, and Alzheimer's. Oliver Sacks, scientist and storyteller, is beloved by readers for his neurological case histories, his fascination and familiarity with human behavior at its most unexpected and unfamiliar.