by the head of the Tsarpa school of the Sakya tradition Chogye Trichen Rinpoche Ngawang Khyenrab Thubten Lekshay Gyatso [= bco brgyad khri chen thub bstan legs bshad rgya mtsho/ (1920–2007)]; translated by John Deweese and Lama Rinchen Chodar, compiled and edited by John Deweese