This is the first book-length study in any language of Jō kei (1155-1213), a prominent Buddhist cleric of the Hossō (Yogācāra) school, whose life bridged the momentous transition from Heian (794-1185) to Kamakura (1185-1333) Japan. "Kamakura Buddhism" has drawn notable scholarly attention, largely because it marks the emergence of new schools-Pure Land, Nichiren, and Zen-that came to dominate the Buddhist landscape of Japan. Although...