The theology of one had its roots in Greek Philosophy; that of the other in Roman Law.

One tended to a brilliant diversity, the other to centralization and unity.

One was a group of Ecclesiastical States, a Hierarchy and a _Polyarchy_, governed by Patriarchs, each supreme in his own diocese; the other was a _Monarchy_, arbitrarily and diplomatically governed from one center.

It was the difference between an archipelago and a continent, and not unlike the difference between ancient Greece and Rome.

One had the tremendous principle of growth, stability, and permanence; the other had not.
Such were the race tendencies which led to entirely different ecclesiastical systems.