Gene Smith wrote this article based on reminiscences, interviews, and writings from H.H. Dilgo Khyentse Rinpoche, Ven. Sogyal Rinpoche, Matthieu Ricard, and others whose lives were touched by Khunu Rinpoche. Excerpts used with permission from Vast as the Heavens, Deep as the Sea: Verses in Praise of Bodhicitta (Wisdom Publications).