A History of the Later Roman Empire - From Arcadius to Irene (395 A. D. To 800 A. D.) #225394

The absolutism of Justinian extended to the ecclesiastical world, and in church as well as in state history he occupies a position of ecumenical importance. He was a sort of imperial pontiff, and this Caesaropapism, as it has been called, represents the fulfilment of the policy which Constantius tried and failed to realise.