
Sasaki Roshi entered a Rinzai monastery when he was fourteen. He earned the title of Roshi (which means "old" and "teacher") when he was forty and moved to California to teach in 1962. His most famous student is Leonard Cohen, the Canadian singer-writer who served as the Roshi's personal assistant during the years he spent in seclusion at Mt. Baldy Zen Center.
Shinzen was ordained as a Shingon monk in Mt. Koya, and has been teaching Vipassana meditation for thirty years. He draws the majority of his teaching analogies from mathematical and scientific concepts and emphasizes the similarity among the contemplative and ethical traditions of the world's religions. He has extensive experience coaching people who are suffering from chronic and acute pain.