Siddhārtha Gautama (Sanskrit; Pali: Siddhāttha Gotama) was a spiritual teacher from Nepal and the founder of Buddhism. The time of his birth and death are uncertain but a number of 20th-century historians have dated his lifetime from circa 563 BC to 483 BC. Some more recent scholars, however, have suggested dates of 410 to 400 BC for his death.[13]. This alternative chronology, however, has not yet been accepted by other historians.[14][15]

This founder of Buddhism said that his teachings would disappear after 5,000 years[16], when no one anymore practices Buddhism. According to the Sutta Pitaka, the "ten moral courses of conduct" will disappear and people will follow the ten amoral concepts of theft, violence, murder, lying, evil speaking, adultery, abusive and idle talk, covetousness and ill will, wanton greed, and perverted lust resulting in skyrocketing poverty and the end of the worldly laws of true dharma.[citation needed]

As part of Buddhist eschatology, it is believed that the era leading up to the coming of the next Buddha Maitreya will be characterized by impiety, physical weakness, sexual depravity and general societal disarray.

Commentators like Buddhaghosa predicted a step-by-step disappearance of the Buddha's teachings. During the first stage, arahants would no longer appear in the world. Later, the content of the Buddha's true teachings would vanish, and only their form would be preserved. Finally, even the form of the Dharma would be forgotten. During the final stage, the memory of the Buddha himself would be forgotten, and the last of his relics would be gathered together in Bodh Gaya and cremated. Some time following this development a new Buddha named Maitreya will arise to renew the teachings of Buddhism and rediscover the path to Nirvana. Maitreya is believed to currently reside in the Tushita heaven, where he is awaiting his final rebirth in the world.

The decline of Buddhism in the world, and its eventual re-establishment by Maitreya, are in keeping with the general shape of Buddhist cosmology. Like Hindus, Buddhists generally believe in a cycle of creation and destruction, of which the current epoch represents only the latest step. The historical Buddha Shakyamuni is only the latest in a series of Buddhas that stretches back into the past.