The book by Eugene Marin is dedicated to the history of Byzantine monasticism from Constantine the Great to Patriarch Photius. The author talks about how, with the adoption of Christianity, Constantinople and the vast territories of the Eastern Roman Empire began to rapidly be built up with temples and monasteries, each of which had a special way of life and traditions. Maren introduces the reader to the inner world of the monastery, traces the life of a monk from joining the monastery to taking the highest rank, and talks about the role the monks played in the political and social life of the empire. A separate chapter is devoted to the intellectual activity of the monks, among whom there were many truly talented theologians, painters, hymnographers and poets. The publishing layout is saved in PDF A4 format.