A translation of the definitive discourse on the nature of the mind and its spiritual restoration by Xuanzang in accordance with the teachings of the Buddhist School on Engaged Meditation (Yogacara). Translated into clear English and organized in an outline form to make it approachable by anyone, this unique work also provides key terms in Sanskrit and Chinese. These terms have been translated into English in ways that offer a fresh and thought-provoking perspective on their originally intended meaning rather than merely repeating past conventions. The introduction, footnoting and index provide a comprehensive background on Buddhist concepts, Buddhist schools of thought and Buddhist history relevant to the translation. This groundbreaking work provides a unique opportunity for those interested in Buddhism to cut through its seemingly complex array of terms and concepts and make sense of its profound explanation of the human condition.