Pelagius

Pelagius was a Christian ascetic and theologian of the late fourth and early fifth centuries, remembered as the figure around whom the controversy later called Pelagianism took shape. Ancient writers describe him as a Briton; Jerome at times used language associated with the Scotti, which some have taken to suggest Irish origin, but the usual ancient designation and the judgment of most modern historians is that he came from Britain. Nothing reliable is known of his family, the precise place of his birth, or the year in which he was born. He enters the historical record as a teacher and spiritual adviser at Rome, where he was already well known by the last decade of the fourth century. Contemporary witnesses, including Augustine of Hippo before the dispute became bitter, acknowledged his reputation for personal austerity and moral seriousness. He lived as a monk and celibate ascetic rather than as a member of any later named religious order.

In Rome Pelagius reacted against what he regarded as ethical complacency among baptized Christians and against theological opinions that, in his view, excused sin by exaggerating human helplessness after the Fall. He insisted that God created human beings with free will, that this freedom remains after Adam’s transgression, and that men and women can, with the aid of God’s law, teaching, and the example of Christ, choose the good. He denied that Adam’s guilt is transmitted to descendants as original sin in the sense later associated with Augustine, and he treated grace primarily as external help—revelation, commandment, and Christ’s example—rather than as an interior operative power without which no meritorious act is possible. These positions were developed in writings that included a commentary on the Pauline epistles, a work on the Christian life, and various letters and tracts. Some survive only in fragments or through quotation by opponents, so the exact contours of his thought remain partly reconstructed from hostile as well as friendly evidence.

The controversy became public after Pelagius and his associate Caelestius left Italy following the Gothic sack of Rome in 410. In North Africa, teaching associated with Caelestius was condemned at a synod in Carthage in 411. Augustine emerged as the principal theological opponent, arguing that Pelagius’s account of freedom and grace undermined the necessity of infant baptism, the church’s prayer for the conversion of the will, and the doctrine that all share in Adam’s sin. Pelagius himself went on to Palestine. In 415 a synod at Diospolis (Lydda) acquitted him of heresy after he offered explanations and disowned some statements attributed to Caelestius; Jerome and others in the East remained hostile. In the West, African bishops pressed Rome for a condemnation. Pope Innocent I declared Pelagius and Caelestius excommunicated in 417. Pope Zosimus briefly accepted Pelagius’s professions of faith, then reversed course. In 418 a council at Carthage issued canons against Pelagian teaching, and the imperial court of Honorius ordered the expulsion of Pelagius and Caelestius from Rome.

After 418 Pelagius vanishes from the surviving sources. The place and date of his death are unknown; later notices that he died in Egypt or elsewhere are not securely founded. Subsequent church councils, including Ephesus in 431, continued to reject Pelagianism. He was not venerated as a saint in the Catholic or Eastern Orthodox churches; his name became a byword for a heresy defined as the denial of original sin and of the necessity of interior grace. Modern historical study has sought to distinguish Pelagius’s own words from the more radical positions of Caelestius and from the polemical summaries of Augustine, but the main lines of the fifth-century conflict and its outcome are well attested in the letters and treatises of Augustine, the correspondence of the Roman bishops, and the acts of the African councils.