Translations

This work, attributed to Prosper of Aquitaine, is a florilegium of patristic and papal authorities, especially from the Roman see, arguing for the coexistence of grace a…

The Liber Responsalis, prefaced by the heading Observationes Praeviae, is a medieval liturgical book containing responsorial chants for the Roman Office. Traditionally a…

Fulgentius of Ruspe (c. 462–533) wrote this treatise during the Arian controversy in Vandal North Africa, likely after 520. Addressed to the notary Felix, it defends Nic…

Ad Vigilium de Iudaica Incredulitate is a pseudonymous Latin treatise attributed to Cyprian of Carthage but likely composed in the late 3rd or early 4th century, possibl…

The 'Capituli Graeci De decem Dei nominibus. Aliud et melius exemplar' is an anonymous Latin treatise on the ten divine names, surviving only in a single Latin manuscrip…

The Charta De Monasterio Wallerensi is a foundation charter attributed to Autbertus, bishop of Cambrai (c. 633–c. 669), concerning the establishment of Wallers Abbey. Th…

The Chronologia Sive Libellus De Mundi Duratione is a short Latin treatise on world chronology attributed to Julius Hilarianus, likely composed in the late 4th or early…

The Commenitorium Orosii ad Augustinum de Errore Priscillianistarum et Origenistarum is a Latin treatise by Paulus Orosius, addressed to Augustine of Hippo, refuting the…

Marius Mercator's Commonitorium De Coelestio Imperatori Oblatum is a formal libellus addressed to Emperor Theodosius II, defending his earlier anti-Pelagian writings and…

The 'Constitutio De Abolendis Reliquiis Idolatriae' is a modern editorial title for a capitulary attributed to a Frankish king named Chidelbertus II, a figure unattested…

The De Altercatione Ecclesiae Et Synagogae Dialogus is a fictional debate between personified Church and Synagogue, a common late-antique and medieval polemical genre. T…

De Amicitia is a treatise on friendship attributed to Augustine of Hippo, likely composed early in his Christian career (ca. 386–389 AD). The work adapts classical philo…

De Assumptione Beatae Mariae Virginis is a Latin treatise, traditionally attributed to Augustine but now considered pseudepigraphal, that narrates the death (dormition)…

De Baptismo Primum is an editorial compilation of synodal letters and decrees from Carthaginian councils held between 255 and 258 CE, presided over by Cyprian. The work…

De benedictionibus Jacob patriarchae is an anonymous Latin treatise on the blessings of Jacob in Genesis 49. Surviving in a single manuscript tradition from the 9th cent…

De Benedictionibus Jacob Patriarchae is a Latin treatise on Jacob's blessings from Genesis 49, traditionally attributed to Augustine but now considered spurious. The wor…

De benedictionibus Jacob patriarchae. Aliud exemplar is a Latin treatise on the blessings of Jacob from Genesis 49, preserved in a manuscript tradition that attributes i…

De Benedictionibus Patriarcharum is a Latin treatise on the patriarchal blessings in Genesis, attributed to Paulinus Mediolanensis, a deacon of Milan and biographer of A…

The anonymous treatise De Computo Paschali is a Latin work on paschal calculation, likely composed in Gaul or Italy during the late 6th or early 7th century. It survives…

De Concordia Matthaei Et Lucae In Genealogia Christi is a Latin treatise attributed to Ambrose of Milan (c. 339–397), likely composed in the 380s during his exegetical d…

De Conflictu Vitiorum et Virtutum is a Latin treatise on the moral struggle between vices and virtues, traditionally attributed to Augustine of Hippo but widely consider…

De Conflictu Vitiorum Et Virtutum is a Latin treatise on the allegorical battle between vices and virtues, traditionally attributed to Isidore of Seville but of uncertai…

De Consolatione Mortuorum is a Latin consolatory treatise on death, traditionally attributed to John Chrysostom but included among Augustine's spuria. Its style and theo…

De Contritione Cordis is a Latin treatise on heartfelt contrition for sin, framed within Augustinian theology of grace and repentance. It explores the nature and necessi…

The anonymous treatise 'De decem Dei nominibus capitulum' lists and allegorizes ten divine names—such as Deus, Dominus, and Pater—in a style reminiscent of late-antique…

De Deo et nominibus ejus is a Latin theological treatise attributed to Jerome but now considered pseudonymous (Pseudo-Hieronymus). It examines divine names as a theologi…

De Dignitate Conditionis Humanae Libellus is a Latin treatise on human dignity, blending philosophical reflection with biblical allusion. Attributed traditionally to Amb…

De Dignitate Sacerdotali is a Latin treatise defending the dignity of the priesthood against secular encroachment. It blends scriptural exegesis with patristic authority…

De Diligendo Deo is a Latin treatise on the love of God, blending scriptural exegesis with Neoplatonic ascent motifs in a homiletic and exhortatory register. The work su…

De Disciplina et bono pudicitiae is a Latin treatise traditionally attributed to Cyprian of Carthage but now considered pseudepigraphic, likely composed in the late 3rd…

De Disciplina Scholarum is a didactic treatise on student conduct and moral formation, blending prescriptive advice with pedagogical theory. Attributed to Boethius but o…

De Diversibus Appellationibus DN Jesu Christo Convenientibus is a Latin treatise attributed to Nicetas, bishop of Aquileia (ca. 366–414), that enumerates and explains th…

De Divinitate Spiritus Sancti [Fragmenta] is a fragmentary Latin treatise by Avitus of Vienne (c. 450–518), written during his episcopate (c. 490–518) amid post-Chalcedo…

The treatise 'De Duodecim Abusionibus Saeculi' (On the Twelve Abuses of the World) is a moralizing work traditionally attributed to Cyprian of Carthage but now considere…

De Duodecim Abusionum Gradibus (The Twelve Grades of Abuse) is a Latin moral treatise from the early medieval period, likely composed in the 7th or 8th century, possibly…

De Ecclesia is a Latin treatise on ecclesiology, attributed to Mavortius but with no contemporary evidence for authorship. The work survives in a single manuscript tradi…

De Ecclesiasticis Dogmatibus is a brief Latin treatise summarizing orthodox Christian doctrine, traditionally attributed to Isidore of Seville but of uncertain authorshi…

De Ecclesiasticis Dogmatibus is a brief Latin handbook of Christian doctrine, traditionally attributed to Gennadius of Massilia but also ascribed to Augustine in some ma…

De Essentia Divinitatis is a late antique or early medieval Latin treatise on the Trinity, falsely attributed to Augustine. It survives in manuscripts from the 9th centu…

De Evangelio is a Latin treatise attributed to Hilary of Poitiers but now considered pseudepigraphal, likely composed in the 5th or 6th century. The sole surviving witne…

De Fide Orthodoxa is an anti-Arian treatise by Phoebaudus of Agen (d. c. 395), defending Nicene orthodoxy against the Homoian creed of the Council of Sirmium. Likely com…

Faustus of Riez's De Gratia (On Grace), written circa 473–480, is a Latin treatise defending a synergistic view of grace and free will against strict predestinarianism.…

De Humilitate Et Obedientia Et De Calcanda Superbia is a Latin treatise exhorting humility and obedience while condemning pride, employing scriptural exempla and moral a…

De Incarnatione Et Gratia is a Latin polemical treatise defending Augustine's doctrine of original sin and grace against Pelagianism, attributed to Petrus Diaconus. It e…

The canons on infant baptism from the Council of Carthage (traditionally dated 418 or 419) respond to Pelagian views denying original sin in infants. The text survives i…

De Inventione Capitis Joannis Baptistae is a Latin treatise attributed to Dionysius Exiguus, recounting the discovery of the head of John the Baptist. The work survives…

Eucherius of Lyon's De Laude Heremi (In Praise of the Desert), composed ca. 428–434, is a letter-treatise addressed to Hilary of Lérins that extols the eremitic life as…

De Laudibus Domini is a late antique Latin treatise that combines exegesis with panegyric on Christ's nativity. Written in elevated prose, it reflects the rhetorical and…

De Machabeis is a Latin treatise attributed to Victorinus of Pettau (d. c. 304), the earliest known Latin exegete. The work offers a typological interpretation of the Ma…

De Montibus Sina et Sion Tractatus is a Latin treatise attributed to Cyprian of Carthage but now considered pseudonymous. It interprets the mountains Sinai and Sion as t…

De montibus Sina et Sion, adversus Judaeos is a Latin treatise transmitted among the Pseudo-Cyprianic corpus. It interprets the mountains Sinai and Sion as typological f…

De Moribus Brachmanorum is a Latin treatise on the customs of the Brahmins, attributed to Ambrosius but of uncertain authorship. It belongs to the Greco-Roman ethnograph…

De Noe is a Latin treatise by Ambrose of Milan, likely composed in the late 380s as part of his exegetical series on Old Testament figures. The work offers an allegorica…

De Non Conveniendo Cum Haereticis is a polemical treatise by Lucifer, Bishop of Cagliari, written in Latin during the mid-4th century, likely in the 360s amid the Arian…

De non parcendo in deum delinquentibus is a polemical treatise by Lucifer, Bishop of Cagliari, arguing that Christians must not spare those who offend God, particularly…

Isidore of Seville's De Ortu et Obitu Patrum offers concise spiritual biographies of biblical figures from Adam to Christ, synthesizing patristic exegesis into a didacti…

De Pascha Computus (On the Computation of Easter) is a Latin treatise attributed to Cyprian of Carthage but almost certainly pseudonymous. It belongs to the early Latin…

De Physicis Liber is a late antique Latin treatise on physics attributed to Gaius Marius Victorinus, a 4th-century rhetor and Neoplatonist who converted to Christianity…

De Professione Fidei is a polemical treatise by Lucifer, bishop of Cagliari (d. 370/371), defending Nicene orthodoxy against Arian or Homoian opponents. Written in Latin…

De Ratione Fidei is a pastoral and doctrinal treatise by Faustus of Riez, composed in Latin around 470–480 during his episcopacy. It addresses the nature of faith, grace…

De Regibus Apostaticis is a polemical treatise by Lucifer, Bishop of Cagliari, written during the reign of Emperor Valens (364–378), likely between 366 and 370. The work…

This anonymous Latin treatise, transmitted among the Pseudo-Cyprianic works, recounts the discovery and translation of the head of John the Baptist. It narrates the reli…

De Rusticiano Subdiacono A Donatistis Rebaptizato is a brief, unadorned Latin report of a rebaptism performed by Donatists on the subdeacon Rusticianus. Its style is fac…

The De Sanctissima Trinitate Confessio is a Latin treatise on the Trinity transmitted under the name of Eusebius of Vercelli. It survives in a single manuscript traditio…

De Sancto Athanasio, Liber I-II is a polemical treatise by Lucifer, Bishop of Cagliari, defending Athanasius of Alexandria against the Homoian (Arian) party. Written in…

De Schematibus et Tropis is a Latin treatise on rhetorical figures, traditionally attributed to Cassiodorus but of uncertain authorship. It survives in a single manuscri…

Gennadius of Marseille's De Scriptoribus Ecclesiasticis (Testimonia) is a continuation of Jerome's De Viris Illustribus, cataloging ecclesiastical writers from the late…

De Singularitate clericorum is a Latin treatise attributed to Pseudo-Cyprian, arguing that clerics must avoid all contact with women. It grounds its prohibition in scrip…

De Sobrietate Et Castitate is a Latin treatise transmitted only within the Augustinian corpus of the Patrologia Latina, with no independent manuscript tradition. Its sur…

De Spectaculis is a Latin treatise attributed to Cyprian of Carthage but now widely regarded as pseudonymous (Pseudo-Cyprian). It condemns public spectacles—theatre, gam…

Faustus of Riez's De Spiritu Sancto Libri Duo (ca. 460–480) is a Latin treatise defending the distinct personhood and divinity of the Holy Spirit against Arian and Maced…

Claudianus Mamertus's 'De Statu Animae' (On the State of the Soul) is a fifth-century Latin treatise defending the incorporeality of the soul against Faustus of Riez. Co…

De Substantia Dilectionis is a short Latin treatise on the nature of love, traditionally attributed to Augustine but now considered spurious. The work develops a central…

This anonymous Latin treatise examines marble donation tablets, likely from a late medieval or early modern ecclesiastical context. The work survives in a single manuscr…

De Tribus Habitaculis Liber is a short Hiberno-Latin treatise attributed to Patricius, traditionally identified with St. Patrick. The work presents a tripartite moral-es…

This treatise argues for both the Trinity and the unity of God, using scriptural citations to defend against Arian and Sabellian positions. Its register is doctrinal and…

De Triplici Habitaculo is a brief, anonymous treatise (Pseudo-Augustine) that allegorically interprets three dwellings of the Christian soul: the body, the soul itself,…

De Unitate Sanctae Trinitatis Dialogus is a Latin treatise on the unity of the Holy Trinity, traditionally attributed to Augustine of Hippo but now considered spurious.…

De Verbi Incarnatione is a Latin theological treatise by the Carolingian poet and scholar Sedulius, composed around 850–860 in the Liège region. The work engages with th…

De Verbi Incarnatione is a Latin treatise on the Incarnation written by the poet and theologian Sedulius, likely in the 430s–440s, during the Christological debates foll…

De Verbis Scripturae is a Latin treatise by Victorinus of Pettau, the earliest known Latin exegete, likely composed in the late third century before the Diocletianic per…

Isidore of Seville's De Viris Illustribus Liber (ca. 615–618) is a bio-bibliographical catalogue of Christian writers from the late 4th to early 7th century, designed as…

Gregory of Tours composed De Virtutibus Sancti Martini Episcopi as a hagiographical treatise recounting posthumous miracles of Saint Martin of Tours, supplementing his e…

Taio Caesaraugustanus (c. 650–683), bishop of Zaragoza, is the attributed author of De Visione Taionis Episcopus, a Latin treatise recounting a vision of the afterlife.…

De Visitatione Infirmorum is a brief pastoral treatise on visiting the sick, traditionally attributed to Augustine but now considered spurious (Incertus). It appears in…

De Visitatione Nepotuli Sui is a treatise by Paulinus of Périgueux (Paulinus Petricordiae), a Gallo-Roman poet and hagiographer active ca. 470–520 CE. Addressed to his n…

De Vita Beati Antoni Monachi is a late antique Latin treatise by Magnus Felix Ennodius, blending hagiographic praise with monastic exhortation. Written in a highly rheto…

Paulinus of Périgueux's De Vita Sancti Martini is a late 5th-century verse hagiography that recasts Sulpicius Severus's prose Vita Martini in hexameter epic style. Compo…

De vitis apostolorum is a series of brief hagiographic sketches of the apostles, traditionally attributed to Jerome but likely compiled in the 6th–7th century during the…

De XII Abusionibus saeculi (On the Twelve Abuses of the World) is a Latin treatise traditionally attributed to Cyprian of Carthage but now recognized as pseudonymous. It…

Philastrius of Brescia's 'Diversarum hereseon liber' (Book of Diverse Heresies) is a late 4th-century Latin treatise cataloguing heresies from the world's origin through…

The Eucharisticum de Vita Sua is a late antique Latin treatise by Magnus Felix Ennodius, bishop of Pavia (c. 513–521). Written as a thanksgiving for his life, it blends…

The Excerpta ex Hieronymi libris de aliquot Palaestinae locis cum tabula geographica is an anonymous compilation of geographical excerpts drawn from Jerome's works, acco…

The Expositum De Die Paschae Et Mensis by Julius Hilarianus is a Latin treatise on the computus for determining the date of Easter and the paschal full moon. Addressed t…

This anonymous Latin treatise compares Greek fragments of the Book of Hebrew Names with Jerome's Latin interpretation, reflecting a philological interest in onomastic tr…

The 'Libellus De Fide Seu Duodecim Anathematismi' is a short Latin treatise attributed to Rufinus of Aquileia (c. 345–411), though its authorship is uncertain and contes…

The 'Libellus De Fidei' is a Latin treatise on orthodox Trinitarian faith, traditionally attributed to Phoebaudus of Agen (4th century). It defends Nicene theology again…

The Liber de Aleatoribus (Book on Gamblers) is a late antique Latin treatise condemning gambling, especially by clergy. Attributed in manuscripts to Cyprian of Carthage,…

The Liber De Diffinitione (Book on Definition) is a concise treatise by Boethius that systematically defines key logical and metaphysical terms such as substantia, accid…

The Liber de Divinis Scripturis sive Speculum is a Latin florilegium of scriptural testimonia arranged by moral and doctrinal topics, traditionally attributed to Augusti…