Ronald M. Davidson, Ph.D. (1985) in Buddhist Studies, University of California Berkeley, is Professor of Religious Studies at Fairfield University. He has published on the history, literature and practice of the Buddhist tantras in India and Tibet, including Indian Esoteric Buddhism: A Social History of the Tantric Movement (2002) and Tibetan Renaissance: Tantric Buddhism in the Rebirth of Tibetan Culture (2005).

Christian K. Wedemeyer, Ph.D. (1999) in Religion, Columbia University, is Assistant Professor of the History of Religions at the University of Chicago Divinity School. He is the author of Āryadeva's Lamp that Integrates the Practices: The Gradual Path of Vajrayāna Buddhism according to the Esoteric Community Noble Tradition (2006).

Collectively, the papers of this volume reveal the cultural dynamism of Tibet in the period between 900 and 1400CE, when the fundamental contours of Tibetan Buddhism were still fluid and highly contested.

The papers address a spectrum of issues in Tibetan religion and literature, ranging in time and space from the far eastern oasis of Dunhuang in the tenth century through ‘high classical’ developments in Central Tibet in the early fifteenth century. It is divided into four parts, addressing respectively literary and religious issues in tenth-century Dunhuang, the textual history of the Old Tantric Canon (Rnying ma’i rgyud ’bum), the development of Tibetan religious literature in the new translation period, and the history and transmission of several influential systems of esoteric Buddhism.