Patristics: Primary Texts

Resources to research Early Church Fathers and early Church History
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Early Church Fathers Writings (English Language) Online and Print

Patrologiae Cursus Completus - Patrologia Latina

Edited by J.P. Migne  in the mid-1880's, the Patrologia Latina includes 1,000 years worth of Latin writings from Tertullian to Pope Innocent III totaling . Vols. 1- 73 include writings from Tertullian to Gregory of Tours, Vols. 74 - 217  from Pope Gregory I to Innocent III.

Patrologia Cursus Completus - Patrologia Gracae

Edited by J.P. Migne in the mid-1880s, the Patrologia Gracae contains he works of the Greek Fathers from the first century (pseudo-Clement) to 1478 (Calliste), and also all major and minor Greek authors and the most important texts of Christian Antiquity and the Middle Ages. Includes Greek writings of  Irenæus of Lyons, Origen, Clement of Alexandria, Eusebius of Caesarea, Gregory of Nyssa, St. John Chrysostom, Cyril of Alexandria, Maximus Confessor, John Damascene, Georgius Pachymeres, Symeon Metaphrastes and others.