This imaginative and insightful book from the author of Awakenings and The Mind's Eye offers a way into a world that is, for many people, alien and unfamiliar; to be profoundly deaf is not just to live in silence, but also to live in a world where the visual is paramount. Oliver Sacks explores the consequences of this condition, including the different ways in which the deaf and the hearing learn to categorize their respective worlds, and how they convey and communicate those experiences to others."A manifesto, characteristically humane and impassioned; once more, Sacks proves he is the doyen of science with a human face."—Sunday Times (London)