It was not only the sameness of climate and the consequent similarity of products which bound the various divisions of the East closer together than were those of the West, but it was rather the one spiritual teaching and the equable advancement of education which placed the Orient before the Occident. This latter dominion had two great works of civilisation before it--to instil religious knowledge into the minds of the inhabitants of the northwestern provinces, and to introduce Catholic Christianity, as yet unknown to them. The East on the other hand consisted entirely of pure Greeks or of those who had long learned not only to speak but to think in Greek from their ancestors who, seven centuries before, had accompanied Alexander in his glorious triumphal march to the Hydaspes. The whole populace had long since been turned from the Arian belief, so that any differences in the interpretation of a dogma were now taken up and carefully thought over by all, rich and poor, from north to south alike. In the Occident, however, there was a strong pagan party at court which had only been outwardly overthrown by the downfall of Eugenius, and needed but a favourable opportunity to reproclaim polytheism, even though it were at the cost of their patriotism. Ambrose states that Theodosius, when on his death-bed, was far more concerned about the sanctity of the church than the welfare of the state, for he little thought that the two portions of his empire would be separated and become as two worlds with totally different histories. He died in the firm belief that his sons and descendants would never lose sight of the value and importance of unity, and that each would make his own the perils of the other. By reason of this the two dominions remained united, at least to all outward appearances, for many centuries. All laws and regulations of both were without exception headed by the names of the two rulers, and they were all drawn up in Latin up to the time of Justinian; the year was then as now named after the two consuls, one of whom was appointed by each division.