The library: Church Fathers, councils, creeds and classics

239 complete Christian works, free to read online: the Apostolic Fathers, the Ante-Nicene and Nicene Fathers, the councils and creeds, the Reformers and Spanish classics.

Early Christian Writings

• The Writings of the Apostolic Fathers — Clement I, Hermas, Ignatius, Papias, Polycarp, and others
• The Didache (Teaching of the Twelve Apostles) — Anonymous (late first or early second century)
• The Apostolic Fathers (Lightfoot–Harmer) — Clement, Ignatius, Polycarp, Hermas, and others
• The Apocryphal New Testament — Various
• The Odes and Psalms of Solomon — Anonymous
• Irenaeus: The Demonstration of the Apostolic Preaching — Irenaeus of Lyons

Ante-Nicene Fathers

• Ante-Nicene Fathers, Vol. 1: The Apostolic Fathers, Justin Martyr, Irenaeus — Clement of Rome, Ignatius, Polycarp, Justin Martyr, Irenaeus
• Ante-Nicene Fathers, Vol. 2: Fathers of the Second Century — Hermas, Tatian, Athenagoras, Theophilus, Clement of Alexandria — Clement of Alexandria, Tatian, Athenagoras, Theophilus, Hermas
• Ante-Nicene Fathers, Vol. 3: Tertullian I — Apologetic, Anti-Marcion, Ethical — Tertullian
• Ante-Nicene Fathers, Vol. 4: Tertullian II, Minucius Felix, Commodian, Origen — Tertullian, Minucius Felix, Origen
• Ante-Nicene Fathers, Vol. 5: Hippolytus, Cyprian, Caius, Novatian — Hippolytus, Cyprian of Carthage, Novatian
• Ante-Nicene Fathers, Vol. 6: Fathers of the Third Century — Gregory Thaumaturgus, Dionysius the Great, Julius Africanus, Methodius, Arnobius — Gregory Thaumaturgus, Dionysius, Methodius, Arnobius
• Ante-Nicene Fathers, Vol. 7: Lactantius, Venantius, Asterius, Victorinus, Dionysius, Apostolic Teaching and Constitutions — Lactantius, Dionysius, and others
• Ante-Nicene Fathers, Vol. 8: The Twelve Patriarchs, the Clementina, Apocrypha, Decretals, and Syriac Documents — Various
• Ante-Nicene Fathers, Vol. 9: The Gospel of Peter, Tatian's Diatessaron, the Apology of Aristides, and Origen's Commentaries on John and Matthew — Tatian, Aristides, Origen, and others

Nicene and Post-Nicene Fathers

• Augustine: Confessions and Letters — Augustine of Hippo
• Augustine: The City of God and On Christian Doctrine — Augustine of Hippo
• Augustine: On the Holy Trinity, Doctrinal and Moral Treatises — Augustine of Hippo
• Augustine: Writings against the Manichaeans and the Donatists — Augustine of Hippo
• Augustine: Anti-Pelagian Writings — Augustine of Hippo
• Augustine: Sermon on the Mount, Harmony of the Gospels, Homilies on the Gospels — Augustine of Hippo
• Augustine: Homilies on the Gospel of John and First John, Soliloquies — Augustine of Hippo
• Augustine: Expositions on the Psalms — Augustine of Hippo
• Chrysostom: On the Priesthood, Ascetic Treatises, Select Homilies and Letters, Homilies on the Statues — John Chrysostom
• Chrysostom: Homilies on Matthew — John Chrysostom
• Chrysostom: Homilies on Acts and Romans — John Chrysostom
• Chrysostom: Homilies on First and Second Corinthians — John Chrysostom
• Chrysostom: Homilies on Galatians to Philemon — John Chrysostom
• Chrysostom: Homilies on John and Hebrews — John Chrysostom
• Eusebius: Church History, Life of Constantine, Oration in Praise of Constantine — Eusebius of Caesarea
• Socrates and Sozomen: Church Histories — Socrates Scholasticus and Sozomen
• Theodoret, Jerome, Gennadius, Rufinus: Historical Writings — Theodoret, Jerome, Gennadius, Rufinus
• Athanasius: Select Works and Letters — On the Incarnation, Against the Arians, Life of Antony — Athanasius of Alexandria
• Gregory of Nyssa: Dogmatic Treatises, Select Writings and Letters — Gregory of Nyssa
• Jerome: Letters and Select Works — Jerome
• Cyril of Jerusalem and Gregory Nazianzen: Catechetical Lectures, Orations, Letters — Cyril of Jerusalem and Gregory of Nazianzus
• Basil the Great: On the Holy Spirit, Hexaemeron, Letters — Basil of Caesarea
• Hilary of Poitiers and John of Damascus: On the Trinity, Exposition of the Orthodox Faith — Hilary of Poitiers and John of Damascus
• Ambrose: Select Works and Letters — Ambrose of Milan
• Sulpicius Severus, Vincent of Lérins, John Cassian — Sulpicius Severus, Vincent of Lérins, John Cassian
• Leo the Great and Gregory the Great — Leo the Great, Gregory the Great
• Gregory the Great (continued), Ephrem the Syrian, Aphrahat — Gregory the Great, Ephrem, Aphrahat
• The Seven Ecumenical Councils: Canons and Dogmatic Decrees — The seven ecumenical councils (325–787)

Augustine

• Augustine: Confessions — Augustine of Hippo
• Augustine: The City of God, Volume I — Augustine of Hippo
• Augustine: The City of God, Volume II — Augustine of Hippo

Second Temple Judaism

• Josephus: The Wars of the Jews — Flavius Josephus
• Josephus: Antiquities of the Jews — Flavius Josephus

Reformation

• Works of Martin Luther, Vol. 1 (Philadelphia Edition) — Martin Luther
• Works of Martin Luther, Vol. 2 (Philadelphia Edition) — Martin Luther
• The Large Catechism — Martin Luther
• The Smalcald Articles — Martin Luther
• The Augsburg Confession — Philip Melanchthon
• The Apology of the Augsburg Confession — Philip Melanchthon
• Commentary on the Epistle to the Galatians — Martin Luther
• Selections from the Table Talk of Martin Luther — Martin Luther
• The Bondage of the Will (De Servo Arbitrio) — Martin Luther
• Institutes of the Christian Religion — John Calvin
• Foxe's Book of Martyrs — John Foxe
• The Council of Trent: Canons and Decrees — The Council of Trent (1545–1563)
• Calvin: A Treatise on Relics — John Calvin
• Calvin: Tracts Relating to the Reformation, Vol. 1 — John Calvin
• Calvin: Tracts Relating to the Reformation, Vol. 2 — John Calvin
• Calvin: Tracts Relating to the Reformation, Vol. 3 — John Calvin
• The Book of Concord: The Symbolical Books of the Lutheran Church — Martin Luther, Philip Melanchthon and others
• Zwingli: Latin Works and Correspondence, Vol. 1 — Huldrych Zwingli
• Zwingli: Latin Works and Correspondence, Vol. 2 — Huldrych Zwingli
• Zwingli: Latin Works and Correspondence, Vol. 3 — Huldrych Zwingli
• Bullinger: The Decades, Vol. 1 — Heinrich Bullinger
• Bullinger: The Decades, Vol. 2 — Heinrich Bullinger
• Bullinger: The Decades, Vol. 3 — Heinrich Bullinger
• The Complete Works of Menno Simons — Menno Simons

Hus, Wycliffe, and the Hussites

• The Church (De Ecclesia) — Jan Hus
• Letters of John Huss, Written During His Exile and Imprisonment — Jan Hus
• The Life & Times of Master John Hus — Count Lützow
• The Hussite Wars — Count Lützow
• Tracts and Treatises of John de Wycliffe — John Wycliffe

Church History

• Ecclesiastical History of the English Nation — Bede
• The Creeds of Christendom, Vol. 1: The History of Creeds — Philip Schaff
• The Creeds of Christendom, Vol. 2: The Greek and Latin Creeds — Philip Schaff
• The Creeds of Christendom, Vol. 3: The Evangelical Protestant Creeds — Philip Schaff
• History of the Christian Church, Vol. 1: Apostolic Christianity, A.D. 1–100 — Philip Schaff
• History of the Christian Church, Vol. 2: Ante-Nicene Christianity, A.D. 100–325 — Philip Schaff
• History of the Christian Church, Vol. 3: Nicene and Post-Nicene Christianity, A.D. 311–600 — Philip Schaff
• History of the Christian Church, Vol. 4: Mediaeval Christianity, A.D. 590–1073 — Philip Schaff
• History of the Christian Church, Vol. 5: The Middle Ages, A.D. 1049–1294 — David S. Schaff
• History of the Christian Church, Vol. 6: The Middle Ages, A.D. 1294–1517 — David S. Schaff
• History of the Christian Church, Vol. 7: Modern Christianity: The German Reformation — Philip Schaff
• History of the Christian Church, Vol. 8: Modern Christianity: The Swiss Reformation — Philip Schaff
• The Bible in Spain — George Borrow

Devotional and Medieval Classics

• Proslogium; Monologium; Cur Deus Homo — Anselm of Canterbury
• The Imitation of Christ — Thomas à Kempis
• The Holy Rule of St. Benedict — Benedict of Nursia
• The Cloud of Unknowing — Anonymous (14th-century English)
• Revelations of Divine Love — Julian of Norwich
• The Consolation of Philosophy — Boethius
• Thomas Aquinas: Summa Theologica, Part I (Prima Pars) — Thomas Aquinas
• Thomas Aquinas: Summa Theologica, Part I-II (Prima Secundae) — Thomas Aquinas
• Thomas Aquinas: Summa Theologica, Part II-II (Secunda Secundae) — Thomas Aquinas
• Thomas Aquinas: Summa Theologica, Part III (Tertia Pars) — Thomas Aquinas
• Catena Aurea: Matthew — Thomas Aquinas (compiler)
• Catena Aurea: Mark — Thomas Aquinas (compiler)
• Catena Aurea: Luke — Thomas Aquinas (compiler)
• Catena Aurea: John — Thomas Aquinas (compiler)
• Abelard: The Story of My Misfortunes — Peter Abelard

After the Reformation

• The Pilgrim's Progress — John Bunyan
• The Works of James Arminius, Vol. 1 — Jacobus Arminius
• The Works of James Arminius, Vol. 2 — Jacobus Arminius
• The Works of James Arminius, Vol. 3 — Jacobus Arminius
• Hooker: Of the Laws of Ecclesiastical Polity, Vol. 1 — Richard Hooker
• Hooker: Of the Laws of Ecclesiastical Polity, Vol. 2 — Richard Hooker
• Owen: The Death of Death in the Death of Christ — John Owen
• Edwards: A Treatise Concerning Religious Affections — Jonathan Edwards
• Edwards: Freedom of the Will — Jonathan Edwards
• Wesley: Sermons on Several Occasions — John Wesley
• Pascal: Pensées — Blaise Pascal
• Russia and the English Church: The Khomiakov–Palmer Correspondence — Alexei Khomiakov and William Palmer

Clásicos en español

• Libro de la vida — Santa Teresa de Jesús
• De los nombres de Cristo — Fray Luis de León
• Poesías: Noche oscura, Cántico espiritual, Llama de amor viva — San Juan de la Cruz
• La Biblia en España, tomo I — George Borrow
• La Biblia en España, tomo II — George Borrow
• La Biblia en España, tomo III — George Borrow
• Imitación de Cristo — Tomás de Kempis
• La ciudad de Dios — San Agustín
• Regla de san Benito — San Benito de Nursia
• Seis libros sobre el sacerdocio — San Juan Crisóstomo
• De la consolación de la filosofía — Boecio
• Institución de la religión cristiana — Juan Calvino
• Guía de pecadores — Fray Luis de Granada
• Las moradas (Castillo interior) — Santa Teresa de Jesús
• Subida del Monte Carmelo y Noche oscura — San Juan de la Cruz
• Cántico espiritual y Llama de amor viva — San Juan de la Cruz
• La perfecta casada — Fray Luis de León
• Los Padres apostólicos — Clemente de Roma, Ignacio de Antioquía, Policarpo y otros
• La Didaché (Enseñanza de los doce apóstoles) — Anónimo (finales del siglo I o principios del II)
• Sobre la encarnación del Verbo — San Atanasio de Alejandría
• Escala espiritual — San Juan Clímaco
• Diálogos de santa Catalina de Sena — Santa Catalina de Siena
• Ejercicios espirituales — San Ignacio de Loyola
• Introducción a la vida devota — San Francisco de Sales
• Las glorias de María — San Alfonso María de Ligorio
• Preparación para la muerte — San Alfonso María de Ligorio
• Visitas al Santísimo Sacramento — San Alfonso María de Ligorio
• Combate espiritual — Lorenzo Scupoli
• Ejercicio de perfección y virtudes cristianas, tomo I — Alonso Rodríguez
• Ejercicio de perfección y virtudes cristianas, tomo II — Alonso Rodríguez
• Catecismo romano del Concilio de Trento — El Concilio de Trento
• Declaración copiosa de la doctrina cristiana — San Roberto Belarmino

More Church Fathers

• Cyril of Alexandria: Commentary on the Gospel of John, Vol. 1 (chapters 1–8) — Cyril of Alexandria
• Cyril of Alexandria: Commentary on the Gospel of John, Vol. 2 (chapters 9–21) — Cyril of Alexandria
• Cyril of Alexandria: Five Tomes against Nestorius, Scholia on the Incarnation, That Christ Is One — Cyril of Alexandria
• Gregory the Great: Dialogues — Gregory the Great
• Gregory the Great: Morals on the Book of Job, Vol. 1 — Gregory the Great
• Gregory the Great: Morals on the Book of Job, Vol. 2 — Gregory the Great
• Gregory the Great: Morals on the Book of Job, Vol. 3 — Gregory the Great
• Gregory the Great: Morals on the Book of Job, Vol. 4 — Gregory the Great
• Dionysius the Areopagite: Works — Dionysius the Areopagite (Pseudo-Dionysius)
• The Paradise of the Holy Fathers, Vol. 1: Lives of the Desert Fathers — Athanasius, Palladius, Jerome and others
• The Paradise of the Holy Fathers, Vol. 2: Sayings of the Desert Fathers — The Desert Fathers
• Fifty Spiritual Homilies of St Macarius the Egyptian — Macarius the Egyptian (Pseudo-Macarius)
• Isaac of Nineveh: Mystic Treatises — Isaac the Syrian (Isaac of Nineveh)
• St Patrick: His Writings and Life — Patrick of Ireland
• Gregory of Tours: The History of the Franks — Gregory of Tours
• Adomnán: The Life of Saint Columba — Adomnán of Iona
• Bede: Historical Works, Vol. 2 — Lives of Cuthbert and of the Abbots — Bede
• The English Correspondence of Saint Boniface — Boniface
• John of Damascus: On Holy Images — John of Damascus
• The Pilgrimage of Etheria (Egeria) — Egeria

Saints since 1500

• The Life of St. Teresa of Jesus — Teresa of Ávila
• The Interior Castle — Teresa of Ávila
• The Ascent of Mount Carmel and The Dark Night of the Soul — John of the Cross
• A Spiritual Canticle and The Living Flame of Love — John of the Cross
• The Sinner's Guide — Louis of Granada
• Ignatius of Loyola: The Spiritual Exercises — Ignatius of Loyola
• The Autobiography of St Ignatius — Ignatius of Loyola
• Francis de Sales: Introduction to the Devout Life — Francis de Sales
• Francis de Sales: Treatise on the Love of God — Francis de Sales
• Alphonsus Liguori: The Glories of Mary — Alphonsus Liguori
• Alphonsus Liguori: Preparation for Death — Alphonsus Liguori
• Alphonsus Liguori: The Way of Salvation and of Perfection — Alphonsus Liguori
• Alphonsus Liguori: Visits to the Most Holy Sacrament — Alphonsus Liguori
• Lorenzo Scupoli: The Spiritual Combat — Lorenzo Scupoli
• Alonso Rodríguez: The Practice of Christian and Religious Perfection, Vol. 1 — Alonso Rodríguez
• Alonso Rodríguez: The Practice of Christian and Religious Perfection, Vol. 2 — Alonso Rodríguez
• Alonso Rodríguez: The Practice of Christian and Religious Perfection, Vol. 3 — Alonso Rodríguez
• The Catechism of the Council of Trent — The Council of Trent
• Robert Bellarmine: The Art of Dying Well — Robert Bellarmine
• Robert Bellarmine: The Mind's Ascent to God by a Ladder of Created Things — Robert Bellarmine
• Peter of Alcántara: A Golden Treatise of Mental Prayer — Peter of Alcántara
• Brother Lawrence: The Practice of the Presence of God — Brother Lawrence of the Resurrection
• Louis de Montfort: True Devotion to the Blessed Virgin — Louis-Marie Grignion de Montfort
• John Henry Newman: Apologia pro Vita Sua — John Henry Newman
• John Henry Newman: An Essay in Aid of a Grammar of Assent — John Henry Newman
• John Henry Newman: An Essay on the Development of Christian Doctrine — John Henry Newman
• Thomas More: A Dialogue of Comfort against Tribulation — Thomas More
• John of Kronstadt: My Life in Christ — John of Kronstadt
• Jean-Pierre de Caussade: Abandonment to Divine Providence — Jean-Pierre de Caussade
• St Jane Frances de Chantal: Selected Letters — Jane Frances de Chantal
• The Life and Letters of St Francis Xavier, Vol. 1 — Henry James Coleridge; Francis Xavier
• The Life and Letters of St Francis Xavier, Vol. 2 — Henry James Coleridge; Francis Xavier

Medieval Saints

• The Dialogue of St Catherine of Siena — Catherine of Siena
• Saint Catherine of Siena as Seen in Her Letters — Catherine of Siena
• Bernard of Clairvaux: On the Love of God — Bernard of Clairvaux
• Bernard of Clairvaux: Sermons on the Song of Songs — Bernard of Clairvaux
• Bernard of Clairvaux: On Consideration — Bernard of Clairvaux
• The Little Flowers of St Francis — Francis of Assisi and his companions
• The Writings of Saint Francis of Assisi — Francis of Assisi
• Bonaventure: The Life of St Francis of Assisi — Bonaventure
• Bonaventure: Holiness of Life — Bonaventure
• Meditations on the Life of Christ (attributed to Bonaventure) — A Franciscan of the 14th century (once attributed to Bonaventure)
• The Life of St Clare — Thomas of Celano (attributed); Clare of Assisi
• Thomas Aquinas: Of God and His Creatures (Summa contra Gentiles) — Thomas Aquinas
• Walter Hilton: The Scale (or Ladder) of Perfection — Walter Hilton
• Richard Rolle: The Form of Perfect Living and Other Prose Treatises — Richard Rolle
• Henry Suso: The Little Book of Eternal Wisdom — Henry Suso
• John Tauler: The Inner Way — John Tauler
• The Life and Revelations of St Gertrude the Great — Gertrude the Great
• The Life and Doctrine of St Catherine of Genoa — Catherine of Genoa
• Revelations of St Bridget on the Life and Passion of Our Lord — Bridget of Sweden
• On Union with God (attributed to Albert the Great) — Attributed to Albert the Great (probably John of Kastl)
• The Moral Concordances (attributed to Saint Anthony of Padua) — Attributed to Anthony of Padua

Historical Theology

• Hefele: A History of the Councils of the Church, Vol. 1 — Karl Joseph von Hefele
• Hefele: A History of the Councils of the Church, Vol. 2 — Karl Joseph von Hefele
• Hefele: A History of the Councils of the Church, Vol. 3 — Karl Joseph von Hefele
• Hefele: A History of the Councils of the Church, Vol. 4 — Karl Joseph von Hefele
• Hefele: A History of the Councils of the Church, Vol. 5 — Karl Joseph von Hefele
• Seeberg: Text-Book of the History of Doctrines, Vol. 1 — Reinhold Seeberg
• Seeberg: Text-Book of the History of Doctrines, Vol. 2 — Reinhold Seeberg
• Fisher: History of Christian Doctrine — George Park Fisher
• Harnack: History of Dogma, Vol. 1 — Adolf von Harnack
• Harnack: History of Dogma, Vol. 2 — Adolf von Harnack
• Harnack: History of Dogma, Vol. 3 — Adolf von Harnack
• Harnack: History of Dogma, Vol. 4 — Adolf von Harnack
• Harnack: History of Dogma, Vol. 5 — Adolf von Harnack
• Harnack: History of Dogma, Vol. 6 — Adolf von Harnack
• Harnack: History of Dogma, Vol. 7 — Adolf von Harnack
• Newman: The Arians of the Fourth Century — John Henry Newman
• Gwatkin: Studies of Arianism — Henry Melvill Gwatkin