Jose Cabezon offers a study of the life and most important extant work of Rog Bande Sherab, also known as Rogben (1166-1244). Rogben studied under some of the greatest Tibetan Buddhist teachers of his day. An itinerant scholar and yogi, he devoted his life to collecting important textual cycles and meditation techniques. Rogben''s most important work, The Lamp of the Teachings, cuts across the genres of history, doctrinal studies, and doxography. It is one of the earliest philosophically robust explanations of the "nine vehicle" system of the Ancient or Nyingma school of Tibetan Buddhism.