CHOYING TOBDEN DORJE (1787-1848) was a brilliant Vajrayana master of Eastern Tibet. His masterwork, The Complete Nyingma Tradition from Sutra to Tantra, remains the main text studied by Tibet's Ngakpa lineages of lay Buddhist practitioners. HEIDI NEVIN is a disciple of Kyabje Chatral Sangye Dorje Rinpoche and Dzongsar Jamyang Khyentse Rinpoche. She began studying Tibetan in Darjeeling, India, in 1996 and has published translations of several biographical and commentarial works under the auspices of Tsadra Foundation. She is currently a member of the in-house translation team at Khyentse Vision Project. She lives in Oregon with her husband and two children.