Ambrose letter to Emperor Theodosius after the massacre at Thessalonica
Ambrose's Letters 17 and 18 to Valentian II in response to Symmachus' Plea for the restoration of The Altar of Victory to the Roman Senate House (dating from the year 384).
Ambrose's Letter 20 to his sister Marcellina about the events of Holy Week 385 or 6
Ambrose Letter 40 to the Emperor Theodosius about the Synagogue in Callinicum
Apollinaris, Apollinarius, his teaching on Christology from fragments of his writings
Apophthegmata Patrum, a selection of sayings of the Desert Fathers and Mothers
Aristides Apology, chapters 1 - 2 and 15 - 17
Arius letter to Alexander of Alexandria as found in Athanasius, De Synodis, 16
Arius letter to Eusebius of Nicomedia as found in Theodoret and Epiphanius. Arius speaks about his Christology.
Arius, the Thalia of, as found in Athanasius, Adversus Arianos Oratio Prima, 1. 5 and De Synodis, 15
Athanasius on the atonement
Athanasius on the Beginnings of Heresy about The Holy Spirit from Letter to Serapion
Athanasius De Synodis, 22-25 - the creeds of the Council of Antioch in 341
Athanasius 39th Festal Letter stating the Canonical books of the New Testament
Athanasius The Life of Antony, chapters 5 - 10 and 89 - 94
Athanasius Oration III against the Arians, chapters 29 - 34 - on the Word made flesh and the two natures of Christ
Athanasius Tomus ad Antiochenos, chapters 3 - 7 - The letter sent from the council of 362 to the Church in Antioch
Augustine Letter 93 to Vincentius - the use of coercion
Augustine Letter 189 to Boniface - should Christian serve in the military?
Augustine on how he was influenced by Ambrose from Confessions, 5. 13. 23 - 14. 25.
Augustine on how he was influenced by the reading of Cicero's Hortensius. Confessions 3. 3. 6 - 5. 9
Augustine on his conversion from Confessions 8. 12. 28-30
Augustine on The Cross from Contra Faustum, 14
Augustine on the episcopate
Augustine on free will
Augustine on Hymn Singing in Milan during the time of Ambrose, from Confessions, 9. 7. 15
Augustine on Nature and Grace, from De Natura et Gratia, 3-6
Augustine on Pelagianism - a selection from De Haeresibus, chapter 88
Augustine - Pelagius and his denial of Original Sin from De Peccato Originali, 13.
Augustine on Philosophy and Theology / Christianity and Pagan learning from De Doctrina Christiana (On Christian Doctrine), 40 (60, 61)
Augustine on Plato's Forms / Ideas, De Diversis Quaestionibus Octoginta Tribus, 46
Augustine on The Relation of the Old and the New Testaments from De Utilitate Credendi 9.3.
Augustine on the Septuagint from De Civitate Dei 18. 41-43
Augustine Sermon 272 on The Eucharist.
Augustine on The Trinity from De Trinitate, 9
Augustine on The Trinity and The Holy Spirit from De Trinitate, 5.10.11 - 5.13.14; 15.17.30 - 15.17.31; 15.19.37
Augustine on The Trinity and The Holy Spirit and whether The Spirit proceeds from The Father only or from The Father and The Son, from In Evangelium Ioannis tractatus, 99: 6 - 9
Augustine on War from Contra Faustum, 22. 69 - 76
Barnabas, Epistle of, 9: 6-9, and 12: 1-7. The Greek text is from the Kirsopp Lake edition of the Apostolic Fathers.
Basil the Great - Address To Young Men On The Right Use Of Greek Literature
Basil the Great on God's Essence and God's Attributes - Letter 234 to Amphilochius.
Basil the Great on the divinity of the Holy Spirit - Letter 159 to Eupaterius and his daughter
Basil the Great, Letter 2 to Gregory of Nazianzus about ascetic life at Annesos
Basil the Great on Ousia and Hypostasis
Basil the Great Regulae Fusius Tractatae - selections from 7.
Basil the Great Homily on Psalm 15 (Septuagint 14) against usury.
Bede on the martyrdom of Alban - Historia Ecclesiastica Gentis Anglorum, 1. 7.
Canons of the Council of Carthage (417 or 418) on sin and grace - directed against Pelagius and Celestius.
Canons of the Council of Chalcedon, 451
Canons of the Council of Constantinople, 381
Canons of the Council of Elvira, first decade of fourth century
Canons of the Council of Ephesus, 431
Canons of the Council of Nicaea, 325
The Chalcedonian Definition
Chalcedon - The Imperial Confirmation (452) of the Council - Edict of Marcian and Valentinian III.
Chalcedon (451) - the Letter of the Council to Leo
I Clement, 40 - 42, 44 about Christian Ministry at the end of the first century
Clement of Alexandria, About Himself, (Stromateis, 1. 1, 11)
Clement of Alexandria on the Ineffability of God (Stromateis, 5. 12)
Clement of Alexandria on Philosophy and Christianity (Stromateis, 5. 12)
Clement of Alexandria, Liber Quis Dives Salvetur, 11 - 17, on the Christian attitude towards riches
Codex Theodosianus - a selection of the edicts relating to Christianity and the Church from this corpus of Roman Law
Constantinople, Council of, 448 - The condemnation of Eutyches
Creed of Constantinople (Homoian - 360) Greek text with translation from Athanasius, De Synodis, 30.
Creed of the Long Lines, Ekthesis Macrostichos - 345 - Greek Text with English translation (from Athanasius and Socrates)
Creed of Nicaea in Greek and Latin - Greek text as agreed at Council of Nicaea in 325
Creed (first) of Sirmium (351), as found in Athanasius, De Synodis, Socrates, Historia Ecclesiastica and Hilary, De Synodis.
Creed (second) of Sirmium (357), as found in Athanasius, De Synodis, Socrates, Historia Ecclesiastica and Hilary, De Synodis.
Creed (fourth) of Sirmium (359), as found in Athanasius, De Synodis and Socrates, Historia Ecclesiastica.
Creed of the Western Council of Sardica (343) - Theodoret, Historia Ecclestiaca, book 2. 6 (or 8)
Cyprian Letter to Pompey about Stephen's views on the baptism of "heretics" - Epistle 73 or 74, LXXIII or LXXIV
Cyprian Letter to Quintus about the baptism of "heretics" - Epistle 70 or 71, LXX or LXXI
Cyprian on the Sacrament of the Cup of the Lord (Epistle 63 or 62 to Caecilius - LXIII or LXII)
Cyprian On the Unity of the Church
Cyril of Alexandria's Letter 39 to John of Antioch (from the year 433) - Formula of Reunion
Cyril of Alexandria Second Letter to Nestorius
Cyril of Alexandria Twelve Anathemas against Nestorius
Cyril of Jerusalem on the significance of baptism from Mystagogica Catechesis, 1, 1-3 (Catechetical Lecture 19, XIX)
Cyril of Jerusalem on the Catholic Church from Catechetical Lecture, 18. 23 & 26
The Didache
Dio Cassius, Historia Romana, Book 67, chapter 14 - Persecution under Domitian
Dionysius of Alexandria - Defence of his Theology - Greek text from Athanasius, De Sententia Dionysii, 14 - 18
Dionysius of Rome, Against the Sabellians, Greek text from a fragment as given in Migne PL vol. 5. (from Athanasius De Decretis Nicaenae Synodi, ch. 26).
Diognetus, Epistle to - chapters 5-7
Egeria (Etheria) - Silviae Vel Potius Aetheriae Peregrinatio Ad Loca Sancta (chapter XXV - Epiphany): The Pilgrimage of Etheria
Egeria (Etheria) - Silviae Vel Potius Aetheriae Peregrinatio Ad Loca Sancta (chapters XXIX - XL - Holy Week and Easter): The Pilgrimage of Etheria
Epiphanius - Marcellus of Ancyra apologia to Pope Julius (containing the Old Roman Creed)
Epiphanius Adversus Haereses (Panarion), 62 in which the views of Sabellius and the Sabellians are described.
Eusebius of Caesarea on the Canon of the New Testament, from Historia Ecclesiastica 3.25.
Eusebius of Caesarea on the Canonical Epistles of the New Testament (Peter and Paul), from Historia Ecclesiastica 3.3.
Eusebius of Caesarea - The Edict of Milan - translation into Greek from the Latin
Eusebius of Caesarea - Letter to Carpianus - about the Eusebian canon tables
Eusebius of Caesarea - Letter to his Church about the Creed of Nicaea. The letter is an important witness to the text of the Creed and has given rise to discussion about the role and motives of Eusebius at Nicaea in 325. The letter is found in Socrates, Historia Ecclesiastica, 1.8.
Eusebius of Caesarea - Life of Constantine, Constantine's vision of the cross
Eusebius of Caesarea - Montanism - the Origins of, from Historia Ecclesiastica, 5.16
Eusebius of Caesarea - on Origen, from Historia Ecclesiastica, 6. 2-3
Eusebius of Caesarea - Origen's work on the Text of the Old Testament (his Hexapla), from Historia Ecclesiastica, 6.16
Eusebius of Caesarea - on Pantaenus, from Historia Ecclesiastica, 5. 10 - 11
Eusebius of Caesarea - on Papias, from Historia Ecclesiastica, 3. 39
Eusebius of Caesarea - Persecution under Nero and the martyrdom of Peter and Paul, from Historia Ecclesiastica, 2.25
Eusebius of Caesarea, Historia Ecclesiastica, 4. 3 about Quadratus and Aristides
Eusebius of Caesarea, Historia Ecclesiastica, 5. 23 - 25 about the Quartodeciman Controversy (the date for celebrating Easter)
Eusebius of Caesarea - Rain from Heaven in answer to Christian prayers, from Historia Ecclesiastica, 5.5
Eusebius of Caesarea, Historia Ecclesiastica, 4. 28 - 29 about Tatian
Eusebius of Caesarea, Historia Ecclesiastica, 5. 28. The Two Theodoti and Monarchianism
Eusebius of Nicomedia - Letter to Paulinus of Tyre, from Theodoret, Historia Ecclesiastica, 1.5 (or 6).
Evagrius of Pontus, Eight Logismoi (thoughts) from the Praktikos
Flavian - Apeal to Leo following the Robber Council (449)
Gregory of Nazianzus on the Deity of the Holy Spirit
Gregory of Nazianzus on The Hospital of Basil (Basileias) - Oration 43, 63
Gregory of Nazianzus Critique of Apollinaris and Apollinarianism, from letter 101 to Cledonius
Gregory of Nazianzus Letter CXXX to Procopius, in which he complains about the futility of Councils of Bishops.
Gregory of Nazianzus - Oration 1 on Easter (Oratio 1 - In sanctum Pascha et in tarditatem)
Gregory of Nazianzus on the Theophany, or Birthday of Christ. Oratio, 38 (1 - 4, 13 - 18).
Gregory of Nyssa on Baptism. In Baptismum Christi (On the Baptism of Christ) - excerpt.
Gregory of Nyssa Life of St Macrina extracts
Gregory of Nyssa - On Slavery - In Ecclesiasten Homiliae - The start of Homily IV
Gregory of Nyssa Oratio Contra Usurarios, extracts
Gregory of Nyssa on the self-emptying of the Godhead
Gregory Thaumaturgus on Origen and Philosophy: Extracts (from 6 and 13) from The Oration and Panegyric addressed to Origen (In Origenem Oratio Panegyrica)
Hadrian Rescript to Caius
