Martin Collcutt is a professor of East Asian studies and history at Princeton University, where he teaches Japanese intellectual and cultural history. He also has a particular interest in the introduction and development of the monastic practice in Japanese Rinzai Zen. In the 1960s he studied and practiced Zen in Japan and met Morinaga Roshi at Daishuin in Kyoto. Subsequently he served as Roshi’s interpreter on some of his visits to the United States and England. His academic background in Japanese Zen and his personal and longstanding involvement with Morinaga Roshi and his teaching makes Professor Collcutt’s informative introduction a valuable contribution to the understanding of this classic text.