The Roman Empire under Augustus was the culmination of the ancient and pagan civilization. It had great vitality, and strength enough to rule the world four hundred years longer; but it had also fatal weaknesses. We have seen that the existence of the empire originated in the inability of the old society to free itself from the vices which long and great prosperity had developed. It had no purifying element strong enough to drive out the disease which its moral weakness had allowed to fasten on it. It was, in fact, based on wrong and could not but perish. Its fall was only a question of time. Its ferocious valor and contempt of the rights of nations broke down the very virtue that was essential to the stability of society. The Romans were robbers on a grand scale, and it was very natural that, when there were no more foreign nations to slay and plunder, the citizens should fall to cutting each others throats and robbing their neighbors. As this would lead to the immediate ruin of society and the state, the empire, which gave them an absolute master, was a necessity. 3. But a full comprehension of the moral laws on which society, institutions and states are founded, was the last to be gained. Most modern nations have not yet attained it, notwithstanding that Christianity has so long stated the principles with clearness and force. The common mind of humanity could master them only by growth through thousands of years and innumerable experiences. The object of all earthly experience is to develop the value of the _individual man_; and the object of society, of institutions and of government, is to protect the rights and to favor the development of _each man_ of the race. When this end is fully secured, history will have solved its problem. As the commencement of the Christian era was the turning point of history in some most important respects, it is proper to glance back and forward over the state of this problem, and the relation of Christianity to it, before proceeding with the general course of events. At first men were like children, with everything to learn; and, like children, they learned one thing at a time; and they also made an addition to their common stock of knowledge at every remove of the centre of growth. In Asia and Egypt the general lesson was industry and obedience, while the Jews, on the western shore, more or less assisted by the Assyrians, the Egyptians and the Greeks, labored at the development of a pure religion which culminated in Christianity. The removal of the centre to Greece added mental and artistic culture, and the further westward journey to Rome gave them a new class of most important ideas concerning public organization, law and order.