Work dossier · summary and historical context
Augustine's 'Liber de Unico Baptismo' (c. 410–411) defends the validity of baptism administered outside the Catholic Church during the Donatist controversy. Written in late antique rhetorical Latin, the treatise argues against Donatist rebaptism, asserting the singularity and non-repeatability of baptism. It relies heavily on Pauline scripture and Roman conciliar legal terminology. The work survives primarily through Carolingian manuscripts (9th century) from Corbie and Lorsch, with fragmentary earlier witnesses. It was later cited by medieval canonists and Thomas Aquinas to support sacramental validity despite heretical administration, though its reasoning on intention is less developed than later scholasticism.
The treatise is a key text in the Donatist controversy, shaping Catholic doctrine on sacramental validity and the non-repeatability of baptism. It influenced medieval canon law and scholastic theology, particularly Thomas Aquinas's arguments on sacraments administered by heretics. Its emphasis on the public nature of baptism and the 'rule of truth' also impacted later Christian debates on sacramental theology.
Augustine composed this treatise around 410–411, during the height of the Donatist controversy in North Africa. The Donatists, a schismatic group, argued that sacraments administered by traditores (those who surrendered scriptures during the Diocletian persecution) were invalid, leading them to rebaptize converts from the Catholic Church. Augustine, as bishop of Hippo, opposed this, insisting that baptism's validity depends on its proper form, not the minister's moral state. The dating relies on internal references to the Conference of Carthage (411). The sole complete manuscript tradition is Carolingian (9th century), with earlier fragmentary witnesses; a lost 6th-century Verona manuscript is known from early modern transcriptions. The work was transmitted through monastic libraries and later cited by Gratian and Thomas Aquinas.
Apparatus · what the pipeline recorded
| Coptic | Rendering | Count | First |
|---|---|---|---|
| no glossary terms recorded | |||