This one-volume translation, with commentary and introduction brings together three important works. All three texts cast great, if generally neglected light on politics and ideology in early Byzantium. Agapetus wrote, c. 527-30CE, from a position sympathetic to Justinian, when he had still to consolidate his authority. He sets out what an emperor must do to acquire legitimacy, in terms of government's being the imitation of God. Read in context, his work is much more than a list of pious commonplaces. The Dialogue, written anonymously towards the end the same reign, comprises fragments from...