[1] He obtained his BA (Sri Lanka, 1959), Ph.D (London), and D. Litt (Hon.
He was assistant lecturer in Pali and Buddhist Civilization at the University of Ceylon, and studied Chinese and Tibetan at the School of Oriental and African Studies at the University of London where he completed a Ph.D. dissertation on the problem of causality in the Pali Nikayas and Chinese Agamas in 1966.
He left the University of Ceylon (1972) to join the University of Hawaii, serving as the Chairman of the Department of Philosophy and Chairman of the Graduate Field in Philosophy (1974–80).
Many of his books are published and widely available in India (by Motilal Banarsidass and others), and therefore presumably have a fairly significant influence on the fields of Buddhism and Buddhist Studies in India and other nearby South Asian countries, such as his native Sri Lanka.
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