Cassian

John Cassian, known in Latin as Ioannes Cassianus and sometimes called Cassian of Marseilles, was a monk, priest, and spiritual writer of the late fourth and early fifth centuries, and one of the principal transmitters of Egyptian desert monasticism to the Latin West. The priest-historian Gennadius of Marseilles, writing later in the fifth century, described him as Scythian by nation, a phrase most modern scholars take as a reference to the Roman province of Scythia Minor on the western shore of the Black Sea, corresponding roughly to the later Dobruja. Other hypotheses, including a birth in southern Gaul, have been advanced but remain unproven. Neither his exact year of birth nor his native city is recorded in surviving sources; he belongs to the generation born around the middle of the fourth century. While still a young man he entered monastic life in Palestine, residing in a community near Bethlehem together with his companion Germanus, who appears throughout Cassian’s writings as fellow traveler and interlocutor.

From Palestine, Cassian and Germanus went to Egypt, then the chief center of Christian monasticism, and spent a number of years among the settlements of the Nile Delta and the desert of Scetis. Cassian later presented this sojourn as a prolonged apprenticeship to the Desert Fathers. His Conferences are cast as reports of conversations with named Egyptian abbots on the aim of the monk, discernment, the struggle with the passions, unceasing prayer, and the degrees of renunciation. Toward the end of the fourth century the Origenist disputes that divided the Egyptian desert, and the measures taken by Patriarch Theophilus of Alexandria against monks suspected of Origenism, led many, including Cassian, to leave Egypt. He made his way to Constantinople, where John Chrysostom ordained him deacon and attached him to the clergy of the imperial capital.

When Chrysostom was condemned and driven into exile, Cassian joined those who sought the intervention of the bishop of Rome. He was in Rome in the opening years of the fifth century and was ordained to the priesthood, though the precise circumstances of that ordination are not fully documented. He then settled at Massilia (Marseille) in southern Gaul. There he founded a monastery for men, later known as the Abbey of Saint-Victor from its association with the cult of the martyr Victor of Marseille, and a monastery for women. These houses were among the earliest organized monastic communities in Gaul to be shaped explicitly by Egyptian cenobitic and eremitical models as Cassian understood them, and they helped establish a durable monastic presence in the region.

At the request of Castor, bishop of Apt, Cassian composed two large Latin works that became classics of Western monastic literature. The Institutes describe the habit, the hours of prayer, and the communal discipline of Egyptian and Palestinian monks, and then analyze eight principal vices—gluttony, fornication, avarice, anger, sadness, acedia, vainglory, and pride—together with their remedies. The Conferences develop the inner teaching of the desert in twenty-four discourses. A third work, On the Incarnation of the Lord against Nestorius, was written about the time of the Council of Ephesus at the instance of Leo, then archdeacon of Rome, as a Latin refutation of Nestorian Christology. Cassian’s treatment of grace, especially in the thirteenth Conference, stressed both the necessity of divine help and a role for the human will at the beginning of conversion. This balance, characteristic of much Gallic monastic theology, was attacked by Prosper of Aquitaine as insufficiently Augustinian and later came to be labeled Semi-Pelagian, a term Cassian himself never used. He was not condemned by name. The Second Council of Orange in 529 affirmed a strongly Augustinian doctrine of grace without erasing Cassian’s standing as a monastic authority.

Cassian is held to have died at Marseille in the 430s and to have been buried at the Abbey of Saint-Victor, where his memory was preserved. In the sixth century the Rule of Saint Benedict directed that the Conferences and Institutes be read to the brethren, thereby weaving Cassian into the spiritual formation of Benedictine monasticism. Eastern Christianity likewise retained him among the ascetic fathers; the Orthodox Church keeps his feast on 29 February (or 28 February in common years). In the West the Roman Martyrology lists him on 23 July, and he has long been honored locally at Marseille. His writings remained a standard guide to the monastic life, the psychology of temptation, and contemplative prayer, and they formed an important bridge between the Greek Christian East and the Latin West.