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Buddhism

Buddhism is a nontheistic religion: it denies the concept of a creator deity or any incarnation of a creator deity. However, Buddhism does teach the rebirth doctrine and asserts that living beings are reborn, endlessly, reincarnating as devas (gods), demi-gods, human beings, animals, hungry ghosts or hellish beings, in a cycle of samsara that stops only for those who reach nirvana (nibbana).

In Tibetan Buddhism, an enlightened spiritual teacher (lama) is believed to reincarnate, and is called a tulku. According to Tulku Thond, there are three main types of tulkus. They are the emanations of buddhas, the manifestations of highly accomplished adepts, and rebirths of highly virtuous teachers or spiritual friends. There are also authentic secondary types, which include unrecognized tulkus, blessed tulkus, and tulkus fallen from the path.