By Huxley, Aldous, Ballard, J G
By Gibran, Kahlil, Waterfield, Robin
By Evans-Wentz, W. Y.
By Lama, Dalai
By Lauf, Detlef Ingo
By Shor, Thomas K., Palmo, Jetsunma Tenzin
By Coleman, Graham, Jinpa, Thupten, Lama, Dalai, Dorje, Gyurme
By Metzner, Ralph, Alpert, Richard, Leary, Timothy, Pinchbeck, Daniel
By W. Y. Evans-Wentz, Donald S. Lopez (Professor of Buddhism and Tibetan Studies, Department of Asian Languages and Cultures, Professor of Buddhism and Tibetan Studies, University of Michigan)
By Robert A. F. Thurman