 Śāntideva (late 7th to mid-8th century CE) was a Buddhist monk, philosopher, and poet whose reflections on the overall structure of Buddhist moral commitments reach a level of generality and theoretical power that is hard to find elsewhere in Indian thought. His writings were immensely influential in the development of the Tibetan religious tradition. Though Śāntideva repeatedly denied that he had said anything original, his two major works may nevertheless represent the single most significant contribution of the Buddhist tradition to the global enterprise of ethical theory. And some of Śāntideva’s poetic passages exhibit an emotional and rhetorical power that gives them a claim to be included among the greatest achievements of world literature.