The attempts to interpret Russian and Southeast European history in light of a Byzantine background tend to focus on traditions of political culture, and to claim that patterns characteristic of the late Roman Empire have had a formative impact on later developments. But the effects attributed to political culture presuppose a civilizational framework, and arguments on that level must come to grips with evidence of historical discontinuity, during the Byzantine millennium as well as in later centuries and on the periphery (...) of the Byzantium cultural world. The path to a historically grounded civilizational analysis is, however, obstructed by persisting images of Byzantium as a stagnant culture, immobilized by a complete fusion of secular and sacred authority. The article discusses and criticizes some of the most influential versions of this view. (shrink)