Definition
Pelagianism is a Christian theological doctrine that denies original sin and asserts that humans have the free will to achieve salvation through their own efforts, independent of God's grace. Named after the British monk Pelagius (late 4th and early 5th centuries), it emphasizes human agency and moral responsibility. It contrasts sharply with the teachings of Augustine of Hippo, who stressed the necessity of divine grace. It was condemned as heresy by several Church councils.