Donald S. Lopez, Jr., is Professor of Buddhist and Tibetan Studies in the Department of Asian languages and Cultures of the University of Michigan. He is the editor of Princeton Readings in Religions, which includes Religions of China in Practice, Buddhism in Practice, Religions of India in Practice, and Religions of Tibet in Practice. His most recent publication is Prisoners of Shangri-La: Tibetan Buddhism and the West.

The Heart Sutra is perhaps the most famous Buddhist text, traditionally regarded as a potent expression of emptiness and of the Buddha's perfect wisdom. This brief, seemingly simple work was the subject of more commentaries in Asia than any other sutra. In Elaborations on Emptiness, Donald Lopez explores for the first time the elaborate philosophical and ritual uses of the Heart Sutra in India, Tibet, and the West.

Included here are full translations of the eight extant Indian commentaries. Interspersed with the translations are six essays that examine the unusual roles the Heart Sutra has played: as a mantra, an exorcism text, a tantric meditation guide, and material for comparative philosophy, Taken together, the translations and essays that make up Elaborations on Emptiness demonstrate why commentary is as central to modern scholars on Buddhism as it was for Buddhists in ancient times.