For modern science, the transitional states of consciousness lie at the forefront of research in many fields. For a Buddhist practitioner these same states present crucial opportunities to explore and transform consciousness itself. This book is the account of a historic dialogue between leading Western scientists and the Dalai Lama of Tibet. Revolving around three key moments of consciousness--sleep, dreams, and death--the conversations recorded here are both engrossing and highly readable. Whether the topic is lucid dreaming, near-death experiences, or the very structure of consciousness itself, the reader is continually surprised and delighted.