Two weeks before his death in 2015, Oliver Sacks presented the contents of The River of Consciousness, his last book. Sacks is famous for his enlightening studies on people living with neurological disorders at the farthest reaches of human experience. However, his field of scientific interests was not limited to neuroscience and medicine; he was fascinated by issues, ideas, and questions from all scientific fields. The breadth of his knowledge and his passion are reflected in the pages of this book, in which he deals with the nature not only of human experience but of life as a whole. In The River of Consciousness, Dr. Sacks tackles evolution, botany, chemistry, medicine, neuroscience, and the arts, addressing the errors of memory, the concept of creativity and time, the nature of consciousness, and conversing with his great heroes—primarily Darwin, Freud, and William James—who were his companions and fellow travelers from a very young age. The River of Consciousness reveals Sacks's inexhaustible love and thirst for knowledge and his relentless, timeless effort to understand the human condition. "Sacks follows the great literary tradition of physician-writers. He is sober, full of joy and humanity, and always ready to enjoy a good story." Spectator "Oliver Sacks is a neurologist full of humanity and sincerity, a charismatic and infectious storyteller." Observer "Oliver Sacks is the most famous neurologist in the world. His clinical studies on neurological disorders shed light on the mysteries of consciousness." Guardian