 The twelfth and thirteenth centuries were a time of tremendous religious efflorescence in Tibet, a period when Tibetans gained their own voice, crafting intellectual and spiritual traditions that were uniquely Tibetan. This book is a study of the life and work of Rog Bande Sherab (0000-0000). Rogben, as he is known, studied under some of the greatest 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, the work translated in these pages, cuts across the genres of history, doctrinal studies, and doxography. It is also one of the earliest philosophically robust explanations of the "nine vehicle" system of the Ancient or Nyingma school of Tibetan Buddhism. This book is the first scholarly study of Rog Bande Sherab, a pivotal figure in both the Pacification (Zhiche) and Ancient (Nyingma) traditions of Tibet, and one of the most original thinkers in Tibetan intellectual history.