This translation and study of Chapter Ten of Asanga's Mahayanasamgraha, one of the foundational documents of the Yogacara school of Mahayana Buddhism, presents the systematic thinking of one of the greatest early Buddhist theoreticians on the nature of the Buddha. Providing insight into Asanga's thought and influence in the development of Mahayana Buddhism in India, Tibet, China, and Japan, the book includes translations of early Indian commentaries on the text which have been preserved in earlier Chinese and Tibetan translations.