Hippocrates  (-460 TO -370)The Oath  [eng]

Thomas Aquinas  (1225-1274)De Occultis Operibus Naturae  [eng]

Gregory of Nyssa  (335-395)De occursu domini  [grc]

John Chrysostom  (349-407)De occursu domini  [grc]

Amphilochius of Iconium  (339-403)In occursum domini  [grc]

Minucius Felix  (150-250)

Evagrius Ponticus  (345-399)De octo spiritibus malitiae  [grc]

John of Damascus  (675-749)De octo spiritibus nequitiae  [grc]

Anonymous  (100-199)The Odes of Solomon  [eng]

Homer  (-750 TO -650)The Odyssey  [eng]

Xenophon  (-431 TO -354)Oeconomicus  [eng]

Sophocles  (-496 TO -405)The Oedipus Trilogy  [eng]

Augustine of Hippo  (354-430)

Cyprian of Carthage  (200-258)

Hippocrates  (-460 TO -370)Of the Epidemics  [eng]

Alexander of Lycopolis  (200-299)Of the ManichΓ¦ans  [eng]

Lactantius  (250-325)

Augustine of Hippo  (354-430)

G. K. Chesterton  (1874-1936)The Old Song  [eng]

John Chrysostom  (349-407)In omnes sanctos  [grc]

Philo of Alexandria  (-20 TO 50)On Abraham  [eng]

Porphyry  (234–305)On abstinence from animal food  [eng]

Hippocrates  (-460 TO -370)On Airs, Waters, And Places  [eng]

G. K. Chesterton  (1874-1936)On American Morals  [eng]

Hippocrates  (-460 TO -370)On Ancient Medicine  [eng]

Tertullian  (155-240)

Augustine of Hippo  (354-430)On Baptism, Against the Donatists  [eng]

Seneca the Younger  (-04 TO 65)On Benefits  [eng]

Thomas Aquinas  (1225-1274)On Buying and Selling on Credit  [eng]

Augustine of Hippo  (354-430)

Thomas Aquinas  (1225-1274)On Charity  [eng]

Augustine of Hippo  (354-430)

Pseudo Albert the Great  (1250)On Cleaving to God  [eng]

Augustine of Hippo  (354-430)

Hippolytus of Rome  (170–235)On Daniel  [eng]

G. K. Chesterton  (1874-1936)On Darwinism and Mystery  [eng]

Aristotle  (-384 TO -322)On Dreams  [eng]

Philo of Alexandria  (-20 TO 50)On Dreams  [eng]

Ananias of Shirak  (595-685)On Easter  [eng]

Venantius Fortunatus  (530-609)On Easter  [eng]

Gregory of Nazianzus  (329-390)

G. K. Chesterton  (1874-1936)On Evil Euphemisms  [eng]

Tertullian  (155-240)

Aphrahat  (280-345)On Faith  [eng]

Tertullian  (155-240)

Hippocrates  (-460 TO -370)On Fistulae  [eng]

Philo of Alexandria  (-20 TO 50)On Flight and Finding  [eng]

Hippocrates  (-460 TO -370)On Fractures  [eng]

Aristotle  (-384 TO -322)On Generation and Corruption  [eng]

Hippocrates  (-460 TO -370)On Hemorrhoids  [eng]

Gregory of Nazianzus  (329-390)

Xenophon  (-431 TO -354)On Horsemanship  [eng]

Hunain ibn Ishaq  (809–873)On how to discern the truth of religion  [eng]

Xenophon  (-431 TO -354)On Hunting  [eng]

Philo of Alexandria  (-20 TO 50)On Husbandry  [eng]

Tertullian  (155-240)

Gregory of Nyssa  (335-395)

Hippocrates  (-460 TO -370)On Injuries of the Head  [eng]

Aristotle  (-384 TO -322)On Interpretation  [eng]

Hippolytus of Rome  (170–235)On Isaiah  [eng]

Cyprian of Carthage  (200-258)

Hippolytus of Rome  (170–235)On Jeremiah and Ezekiel  [eng]

Philo of Alexandria  (-20 TO 50)On Joseph  [eng]

Hippolytus of Rome  (170–235)On Kings  [eng]

Abu al-Faraj Abdallah ibn al-Tayyib  (1000-1043)On Knowledge and Miracles  [eng]

Aristotle  (-384 TO -322)On Longness and Shortness of Life  [eng]

Bernard of Clairvaux  (1090-1153)On Loving God  [eng]

Hippolytus of Rome  (170–235)On Luke  [eng]

Athanasius of Alexandria  (295-373)On Luke X. 22  [eng]

Augustine of Hippo  (354-430)

Philo of Alexandria  (-20 TO 50)On Mating  [eng]

Hippolytus of Rome  (170–235)On Matthew  [eng]

Aristotle  (-384 TO -322)On Memory and Recollection  [eng]

G. K. Chesterton  (1874-1936)On Mending and Ending Things  [eng]

Tertullian  (155-240)

Cyprian of Carthage  (200-258)

Proclus  (412-485)On Motion  [eng]

Augustine of Hippo  (354-430)

Hippolytus of Rome  (170–235)On Numbers  [eng]

Augustine of Hippo  (354-430)

Tertullian  (155-240)

Gregory of Nazianzus  (329-390)

Gregory of Nyssa  (335-395)On Pilgrimages  [eng]

Origen of Alexandria  (184-253)

Tertullian  (155-240)

Aristotle  (-384 TO -322)On Prophesy by Dreams  [eng]

Hippolytus of Rome  (170–235)On Proverbs  [eng]

Philo of Alexandria  (-20 TO 50)On Providence Fragment I  [eng]

Cyprian of Carthage  (200-258)

Augustine of Hippo  (354-430)

Hippocrates  (-460 TO -370)On Regimen in Acute Diseases  [eng]

Ambrose of Milan  (339-397)

Tertullian  (155-240)

Philo of Alexandria  (-20 TO 50)On Rewards and Punishments  [eng]

Aristotle  (-384 TO -322)On Sense and Sensibles  [eng]

Philo of Alexandria  (-20 TO 50)On Sobriety  [eng]

Aristotle  (-384 TO -322)On Sophistical Refutations  [eng]

Thomas Aquinas  (1225-1274)On Spiritual Creatures  [eng]

Cyprian of Carthage  (200-258)

Tertullian  (155-240)

Gregory of Nazianzus  (329-390)

Aristotle  (-384 TO -322)On the Art of Rhetoric  [eng]

Hippocrates  (-460 TO -370)On the Articulations  [eng]

Gregory of Nyssa  (335-395)

Philo of Alexandria  (-20 TO 50)On the Birth of Abel  [eng]

Augustine of Hippo  (354-430)

Porphyry  (234–305)On the Cave of the Nymphs  [eng]

Eusebius of Caesarea  (260-340)On the Celebration of Easter  [eng]

Philo of Alexandria  (-20 TO 50)On the Change of Names  [eng]

Alain of Lille  (1128-1202)On the Complaint of Nature  [eng]

Philo of Alexandria  (-20 TO 50)On the Confusion of Tongues  [eng]

Severus Sebokht  (575-667)On the Constellations  [eng]

Philo of Alexandria  (-20 TO 50)On the Contemplative Life  [eng]

Athanasius of Alexandria  (295-373)

Philo of Alexandria  (-20 TO 50)On the Creation  [eng]

Victorinus of Pettau  (250-304)

Augustine of Hippo  (354-430)

Gregory of Nazianzus  (329-390)

Ambrose of Milan  (339-397)

Hippolytus of Rome  (170–235)

Cyprian of Carthage  (200-258)

Ambrose of Milan  (339-397)

Philo of Alexandria  (-20 TO 50)On the Embassy to Gaius  [eng]

Porphyry  (234–305)On the faculties of the Soul  [eng]

Gregory of Nyssa  (335-395)

John Chrysostom  (349-407)

Tertullian  (155-240)

Aristotle  (-384 TO -322)On the Gait of Animals  [eng]

Philo of Alexandria  (-20 TO 50)On the Giants  [eng]

Cyprian of Carthage  (200-258)

Augustine of Hippo  (354-430)

Salvian of Marseilles  (400-475)On the Government of God  [eng]

Gregory of Nazianzus  (329-390)

Aristotle  (-384 TO -322)On the Heavens  [eng]

Hippolytus of Rome  (170–235)On the Hexaemeron and On Genesis  [eng]

Aristotle  (-384 TO -322)On the History of Animals  [eng]

Ambrose of Milan  (339-397)

Gregory of Nyssa  (335-395)

Athanasius of Alexandria  (295-373)

Novatian  (200–258)

Cyprian of Carthage  (200-258)

John Chrysostom  (349-407)

Philo of Alexandria  (-20 TO 50)On the Life of Moses I  [eng]

Sulpicius Severus  (363-425)On the Life of St. Martin  [eng]

Cyprian of Carthage  (200-258)

Gregory of Nyssa  (335-395)

Augustine of Hippo  (354-430)

Philo of Alexandria  (-20 TO 50)On the Migration of Abraham  [eng]

John the Lydian  (490-578)On the months Book 4. March  [eng]

Augustine of Hippo  (354-430)On the Morals of the Catholic Church  [eng]

Aristotle  (-384 TO -322)On the Motion of Animals  [eng]

Ambrose of Milan  (339-397)

Ananias of Shirak  (595-685)On the Nativity  [eng]

Lucretius  (-99 TO -55)On the Nature of Things  [eng]

Tertullian  (155-240)

Aristotle  (-384 TO -322)On the Parts of Animals  [eng]

Philo of Alexandria  (-20 TO 50)On the Posterity of Cain and His Exile  [eng]

Thomas Aquinas  (1225-1274)On the Power of God  [eng]

John Chrysostom  (349-407)

Augustine of Hippo  (354-430)

Hippolytus of Rome  (170–235)On the Psalms  [eng]

Josephus Genesius  (800-899)On the reigns of the emperors  [grc]

Justin Martyr  (100-165)

Athenagoras  (133-190)

Tertullian  (155-240)

Hippocrates  (-460 TO -370)On the Sacred Disease  [eng]

John Chrysostom  (349-407)

Justin Martyr  (100-165)

Hippolytus of Rome  (170–235)On the Song of Songs  [eng]

Aristotle  (-384 TO -322)On the Soul  [eng]

Gregory of Nyssa  (335-395)

Augustine of Hippo  (354-430)

Eusebius of Caesarea  (260-340)On the Star  (Spurious)  [eng]

Hippocrates  (-460 TO -370)On the Surgery  [eng]

Pseudo Athanasius  (350)On the Temple at Athens  [eng]

Tertullian  (155-240)

Gregory of Nazianzus  (329-390)

Augustine of Hippo  (354-430)

Novatian  (200–258)

Philo of Alexandria  (-20 TO 50)On the Unchangableness of God  [eng]

Cyprian of Carthage  (200-258)

Tertullian  (155-240)

Philo of Alexandria  (-20 TO 50)On the Virtues  [eng]

Thomas Aquinas  (1225-1274)On the Virtues (In General)  [eng]

Gregory of Nazianzus  (329-390)

Lactantius  (250-325)

G. K. Chesterton  (1874-1936)On Turnpikes and Medievalism  [eng]

Augustine of Hippo  (354-430)On Two Souls, Against the ManichΓ¦ans  [eng]

Hippocrates  (-460 TO -370)On Ulcers  [eng]

Gregory of Nyssa  (335-395)

Cyprian of Carthage  (200-258)

Aristotle  (-384 TO -322)On Youth and Old Age  [eng]

Eusebius of Caesarea  (260-340)Onomasticon  [eng]

John Chrysostom  (349-407)In operarios undecimae horae  [grc]

Gregory of Nyssa  (335-395)De opificio hominis  [grc]

Michael Psellus  (1027-1078)Opuscula logica  [grc]

Macarius of Egypt  (300-391)Opusculum  [grc]

Thomas Aquinas  (1225-1274)The Opusculum on Lots  [eng]

John Chrysostom  (349-407)In oraculum Zacharia  [grc]

Justin Martyr  (100-165)Oratio ad gentiles  [grc]

Tatian  (120-180)Oratio ad Graecos  [grc]

Constantine Manasses  (1130-1187)Oratio ad milites  [grc]

John Chrysostom  (349-407)Oratio ante lectionem  [grc]

Gregory of Nyssa  (335-395)Oratio catechetica magna  [grc]

John Chrysostom  (349-407)Oratio de epiphania  [grc]

John of Damascus  (675-749)Oratio de his qui in fide dormierunt  [grc]

John Chrysostom  (349-407)Oratio de hypapante  [grc]

Constantine Manasses  (1130-1187)Oratio de translatione Chrysostomi  [grc]

Cyril of Alexandria  (376-444)Oratio in ascensionem domini  [grc]

Gregory of Nyssa  (335-395)Oratio in diem natalem Christi  [grc]

Amphilochius of Iconium  (339-403)Oratio in resurrectionem domini  [grc]

Athanasius of Alexandria  (295-373)Oratio in resurrectionem et in recens baptizatos  [grc]

Basil of Caesarea  (330–379)Oratio pro inimicis et amicis  [grc]

Athanasius of Alexandria  (295-373)Oratio quarta contra Arianos  [grc]

John Chrysostom  (349-407)Oratio secunda  [grc]

Gregory of Nazianzus  (329-390)

Methodius of Olympus  (250-311)Oration on the Palms  [eng]

Julian the Apostate  (331-363)Oration upon the Mother of the Gods  [eng]

Evagrius Ponticus  (345-399)De oratione  [grc]

John Chrysostom  (349-407)De oratione  [grc]

Origen of Alexandria  (184-253)De oratione  [grc]

Gregory of Nyssa  (335-395)De oratione dominica orationes v  [grc]

Athanasius of Alexandria  (295-373)Orationes contra Arianos  [grc]

Eustathius of Antioch  (300-337)Orationes contra Arianos  [grc]

John of Damascus  (675-749)Orationes de imaginibus tres  [grc]

Michael Psellus  (1027-1078)Orationes forenses et acta  [grc]

Basil of Caesarea  (330–379)Orationes sive exorcismi  [grc]

Gregory of Nyssa  (335-395)Orationes viii de beatitudinibus  [grc]

Michael Psellus  (1027-1078)Oratoria minora  [grc]

Euripides  (-480 TO -406)Orestes  [eng]

Gregory Thaumaturgus  (213-270)In Origenem oratio panegyrica  [grc]

Origen of Alexandria  (184-253)Origen's Commentary on Matthew  [eng]

G. K. Chesterton  (1874-1936)Orthodoxy  [eng]

George Choeroboscus  (800-899)De orthographia  [grc]

John the Lydian  (490-578)De ostentis  [grc]

G. K. Chesterton  (1874-1936)The Outline of Sanity  [eng]

John Henry Newman  (1801-1890)Oxford University Sermons  [eng]

Ambrose of Milan  (339-397)De Officiis Ministrorum Libri Tres  [lat]

Augustine of Hippo  (354-430)De Ordine Libri Duo  [lat]

Bonaventure of Bagnoregio  (1221-1274)Opuscula Ad Ordinem Spectantia  [lat]

Cyprian of Carthage  (200-258)Oratio Antiocheni Pro Martyribus [Incerta]  [lat]

Damasus I  (305-384)Opera Apocrypha  [lat]

Decimius Magnus Ausonius  (310-395)Ordo Nobilium Urbium  [lat]

Francis of Assisi  (1181-1226)Officium Passionis Dominicae  [lat]

Lactantius  (250-325)De Opificio Dei  [lat]

Minucius Felix  (150-250)Octavius  [lat]

Silvester I  (275-335)Opera Quae Exstant  [lat]

Tertullian  (155-240)De Oratione  [lat]

Thomas Aquinas  (1225-1274)De Occultis Operibus Naturae  [lat]