The Struggle of the Christian Civilization from the Era of the Crusades to the fall of the East (1453)

Extract

The compromise between the ecclesiastical and civil powers of the Western Empire, effected at Worms (1122), did not touch the Byzantines. The Roman world, still nominally one, had indeed for 300 years and more maintained the some-what artificial position which obliged the West largely to ignore the East; and then led the East to regard the West as little more than a dependency. This had grown to be, in many ways, inevitable, even from the time of the Diocletian arrangement of the Empire; and it acquired special force amidst the various partitionings of Constantine's descendants and successors.