In the history of Tibetan Buddhism, the eleventh-century Indian mystic Nbropa occupies an unusual position, for his life and teachings mark both the end of a long tradition and the beginning of a new and rich era in Buddhist thought. Nbropa's biography, translated by the world-renowned Buddhist scholar Herbert V. Guenther from hitherto unknown sources, describes with great psychological insight the spiritual development of this scholar-saint. It is...