In the collection of materials of the Third International Patriotic Conference of the All-Church Postgraduate and Doctoral Studies. Sts. Cyril and Methodius "St. John Cassian and the monastic tradition of the Christian East and West" (Moscow, November 19-21, 2015) includes reports from foreign and domestic patrollers, theologians and Church historians, which discuss important aspects of the study of the personality and spiritual heritage of St. John Cassian (c. 360-435), such as his origin and chronology of the last years of his life, literary and theological features of his creations, their ancient translations and manuscript tradition, his teaching about God, about the Incarnation, about man, about ascetic doing, dispassion , virtues, knowledge of God, prayer and contemplation of God, about the Eucharist, as well as the influence of St. Rev. Cassian on the formation of the monastic tradition of the Christian East and West.The book can be used to deepen knowledge of patristics, church history, dogmatic theology, Christian asceticism, as well as in the preparation of students of theological, historical, philosophical, historical, cultural and religious specialties.