This book deals with the works of the anti-Chalcedonian hagiographer, John Rufus, and traces the basic motives behind the opposition against the council of Chalcedon in the fifth century through an attempt to reconstruct a specific anti-Chalcedonian culture. As part of the eastern monastic culture, it considered itself a counter-culture guarding purity of ascetic conduct and orthodoxy from being defiled by the perverseness of the majority. Reading John Rufus' hagiography, we find ourselves in the midst of a cosmological warfare between good and evil, where the great heroes of the anti-Chalcedonian movement enter into history as God's warriors against the rebellion of demons and heretics.