Two weeks before his death, Oliver Sacks outlined the contents of The River of Consciousness, the last book he would oversee. The bestselling author of On the Move, Musicophilia, and The Man Who Mistook His Wife for a Hat, Sacks is known for his illuminating case histories about people living with neurological conditions at the far borderlands of human experience. But his grasp of science was not restricted to neuroscience or medicine; he was fascinated by the issues, ideas, and questions of all the sciences. That wide-ranging expertise and passion informs the perspective of this book, in which he interrogates the nature not only of human experience but of all life. In The River of Conscious