Abstract
M.A.
144
This dissertation is essential because it has indicated the reasons, which have caused the religious juxtaposition, then antagonism, between Constantinople and Rome from the patriarchate of Photios (867) to the days of Michael Keroularios (1054), as well as the consequences that have emanated from it, both at political and social level. It is a historical comparative study, which avoids the narrow limits of theological “misunderstandings” and the various dogmatic interpretations. It is placed within a social, political and cultural framework that has resulted from the particular cultural conditions as these have been formed in both parts of the Roman Empire.This particular study has followed the historical comparative method for the analysis of the religious juxtaposition between Constantinople and Rome. The sources were studied in their original Medieval Greek language according to the historical-critical and philological methodology.
The study is completed by the comparison of two Schisms of the year 867 between patriarch Photios and Pope Nicholas I, and of the year 1054 between patriarch Michael Keroularios and Cardinal Umberto, and their consequences, especially from a Byzantine point of view.