Pelagianism was a 5th century Christian theological movement led by Pelagius and Caelestius. It was declared heretical for believing that people did not need divine grace to be saved and that there was no such thing as original sin. Pelagianism began around 411-415 CE in Rome, where Pelagius spent most of his life, and was condemned by the Council of Carthage in 418 CE. It continued subtly after this until being fully rejected by 529 CE. Pelagianism disagreed with the Church's teachings on salvation and predestination.