religion and philosophy that developed from the teachings of the Buddha Gautama (or Gotama), who lived as early as the 6th century BC. Spreading from India to Central and Southeast Asia, China, Korea, and Japan, Buddhism has played a central role in the spiritual, cultural, and social life of the Eastern world and during the 20th century has spread to the West. This article surveys Buddhism from its origins to its elaboration in various schools, sects, and regional developments. Ancient Buddhist scripture and doctrine developed primarily in two closely related literary languages of ancient India, Pali and Sanskrit. In this article, Pali and Sanskrit words that have gained some currency in English are treated as English words and are rendered in the form in which they appear in English-language dictionaries. Exceptions occur in special circumstancesas, for example, in the case of the Sanskrit term dharma (Pali: dhamma), which has meanings that are not usually associated with the English dharma. Pali forms are given in the sections that deal with Buddhists whose primary sacred language was Pali (including discussions of the teaching of the Buddha, which are reconstructed on the basis of Pali texts). Sanskrit forms are given in the sections that deal with Buddhists whose primary focus was on Sanskritic traditions....