Theodoret of Cyrus or Cyrrhus was an influential theologian of the School of Antioch, biblical commentator, and Christian bishop of Cyrrhus (423–457).
Gennadius II was a Byzantine Greek philosopher and theologian, and Ecumenical Patriarch of Constantinople from 1454 to 1464. He was a strong advocate for the use of Aristotelian philosophy in the Orthodox Church.
Proclus was the archbishop of Constantinople from 434 until his death. Renowned for his homiletic abilities, Proclus played a central role in the Nestorian controversy. His contributions to the theology of the developing cult of the Virgin Mary place him among the early and foremost Marian theologians. He is venerated as a saint in the Catholic Church, the Eastern Catholic Churches, the Eastern Orthodox Church, and Oriental Orthodoxy.
The Philokalia is "a collection of texts written between the 4th and 15th centuries by spiritual masters" of the mystical hesychast tradition of the Eastern Orthodox Church. They were originally written for the guidance and instruction of monks in "the practice of the contemplative life". The collection was compiled in the 18th century by Nicodemus the Hagiorite and Macarius of Corinth based on the codices 472, 605, 476, 628 and 629 from the library of the monastery of Vatopedi, Mount Athos.
John IV, also known as John Nesteutes, was the 33rd bishop or Patriarch of Constantinople. He was the first to assume the title Ecumenical Patriarch. He is regarded as a saint by the Eastern Orthodox Church which holds a feast on September 2.
John Cassian, also known as John the Ascetic and John Cassian the Roman, was a Christian monk and theologian celebrated in both the Western and Eastern churches for his mystical writings. Cassian is noted for his role in bringing the ideas and practices of early Christian monasticism to the medieval West.
Ammon, Amun, Ammonas, Amoun (Ἀμοῦν), or Ammonius the Hermit was a 4th-century Christian ascetic and the founder of one of the most celebrated monastic communities in Egypt. He was subsequently declared a saint. He was one of the most venerated ascetics of the Nitrian Desert, and Athanasius of Alexandria mentions him in his life of Anthony the Great.
Evagrius Ponticus, also called Evagrius the Solitary, was a Christian monk and ascetic from Heraclea, a city on the coast of Bithynia in Asia Minor. One of the most influential theologians in the late fourth-century church, he was well known as a thinker, polished speaker, and gifted writer. He left a promising ecclesiastical career in Constantinople and traveled to Jerusalem, where in 383 AD he became a monk at the monastery of Rufinus and Melania the Elder. He then went to Egypt and spent the remaining years of his life in Nitria and Kellia, marked by years of asceticism and writing. He was a disciple of several influential contemporary church leaders, including Basil of Caesarea, Gregory of Nazianzus, and Macarius of Egypt. He was a teacher of others, including John Cassian and Palladius of Galatia.
Saint Nicetas of Medikion or Nicetas the Confessor, who is commemorated on 3 April, was a monk who opposed Byzantine Iconoclasm.
Saint Nilus the Elder of Sinai was one of the many disciples and stalwart defenders of St. John Chrysostom.
Hesychius of Sinai was a hieromonk of Saint Catherine's Monastery on Mount Sinai, and an ascetic author of the Byzantine period in literature.
Isidore of Pelusium was born in Egypt to a prominent Alexandrian family. He became an ascetic, and moved to a mountain near the city of Pelusium, in the tradition of the Desert Fathers.
A patristic anthology, commonly called a florilegium, is a systematic collections of excerpts from the works of the Church Fathers and other ecclesiastical writers of the early period, compiled with a view to serve dogmatic or ethical purposes. These encyclopedic compilations are a characteristic product of the later Byzantine theological school, and form a very considerable branch of the extensive literature of the Greek Catenæ. They frequently embody the only remains of some patristic writings.
John Moschus, surnamed Eucrates, was a Byzantine monk and ascetical writer. He is primarily known for his writing of the Spiritual Meadow. The Spiritual Meadow, alongside the Bibliotheca of Photios, are the main sources from which his life is known.
Leontius of Byzantium was a Byzantine Christian monk and the author of an influential series of theological writings on sixth-century Christological controversies. Though the details of his life are scarce, he is considered by some a groundbreaking innovator in Christian theological reflection for having introduced Aristotelian definitions into theology.
Orientius was a Christian Latin poet of the fifth century.
Simeon Stylites the Younger, also known as Simeon of the Admirable Mountain, is a saint in the Catholic Church and Eastern Orthodox Church.
Marius Mercator was a Latin Christian ecclesiastical writer best known for his advocacy of Augustinian theology during the Pelagian controversy.
Joseph the Hymnographer was a Greek monk of the ninth century. He is regarded as one of the greatest liturgical poets and hymnographers of the Eastern Orthodox Church. He is also known for his confession of the Orthodox Faith in opposition to Iconoclasm.
Marcus Diadochus was a Christian writer of the fourth century.
