In the west, especially in the church, Latin is used. In the east, in the church, Greek is used. There are spiritual debates that we will touch on in a few minutes, but there's also a power struggle. You have the Byzantine emperor seated in Constantinople. You have the Bishop of Rome, now known as the Pope, really the Pope of Rome, who considers themselves more and more the leader of all of Christianity, and their argument there is, look, this is the church that, according to tradition, was founded by Peter, first amongst the apostles. You have the Patriarch of Constantinople, and patriarchs of other significant centers of Christianity say, wait, hold on a second. Yes, Bishop of Rome, you are very important, but we consider you to be first amongst equals.