The latter years of his reign Hadrian passed at Rome. It was here that this princely builder erected his most splendid structures. Among these was the Mole, or Mausoleum, of Hadrian, an immense structure surmounted by a gilded dome, erected on the banks of the Tiber, and designed as a tomb for himself.

THE ANTONINES (A.D. 138-180).—Aurelius Antoninus, surnamed Pius, the adopted son of Hadrian, and his successor, gave the Roman empire an administration singularly pure and parental. Of him it has been said that "he was the first, and, saving his colleague and successor Aurelius, the only one of the emperors who devoted himself to the task of government with a single view to the happiness of his people." Throughout his long reign of twenty-three years, the empire was in a state of profound peace. The attention of the historian is attracted by no striking events, which, as many have not failed to observe, illustrates admirably the oft-repeated maxim, "Happy is that people whose annals are brief."

Antoninus, early in his reign, united with himself in the government his adopted son Marcus Aurelius, and upon the death of the former (A.D. 161) the latter succeeded quietly to his place and work. His studious habits won for him the title of "Philosopher." He belonged to the school of the Stoics, and was a most thoughtful writer. His Meditations breathe the tenderest sentiments of devotion and benevolence, and make the nearest approach to the spirit of Christianity of all the writings of Pagan antiquity. He established an Institution, or Home, for orphan girls; and, finding the poorer classes throughout Italy burdened by their taxes and greatly in arrears in paying them, he caused all the tax-claims to be heaped in the Forum and burned.

The tastes and sympathies of Aurelius would have led him to choose a life passed in retirement and study at the capital; but hostile movements of the Parthians, and especially invasions of the barbarians along the Rhenish and Danubian frontiers, called him from his books, and forced him to spend most of the latter years of his reign in the camp. The Parthians, who had violated their treaty with Rome, were chastised by the lieutenants of the emperor, and Mesopotamia again fell under Roman authority.

This war drew after it a series of terrible calamities. The returning soldiers brought with them the Asiatic plague, which swept off vast numbers, especially in Italy, where entire cities and districts were depopulated. In the general distress and panic, the superstitious people were led to believe that it was the new sect of Christians that had called down upon the nation the anger of the gods. Aurelius permitted a fearful persecution to be instituted against them, during which the famous Christian fathers and bishops, Justin Martyr and Polycarp, suffered death.

It should be noted that the persecution of the Christians under the Pagan emperors, sprung from political rather than religious motives, and that this is why we find the names of the best emperors, as well as those of the worst, in the list of persecutors. It was believed that the welfare of the state was bound up with the careful performance of the rites of the national worship; and hence, while the Roman rulers were usually very tolerant, allowing all forms of worship among their subjects, still they required that men of every faith should at least recognize the Roman gods, and burn incense before their statues. This the Christians steadily refused to do. Their neglect of the service of the temple, it was believed, angered the gods, and endangered the safety of the state, bringing upon it drought, pestilence, and every disaster. This was the main reason of their persecution by the Pagan emperors.

But pestilence and persecution were both forgotten amidst the imperative calls for immediate help that now came from the North. The barbarians were pushing in the Roman outposts, and pouring impetuously over the frontiers. To the panic of the plague was added this new terror. Aurelius placed himself at the head of his legions, and hurried beyond the Alps. For many years, amidst the snows of winter and the heats of summer, he strove to beat back the assailants of the empire.

The efforts of the devoted Aurelius checked the inroads of the barbarians; but he could not subdue them, so weakened was the empire by the ravages of the pestilence, and so exhausted was the treasury from the heavy and constant drains upon it. At last his weak body gave way beneath the hardships of his numerous campaigns, and he died in his camp at Vindobona (now Vienna), in the nineteenth year of his reign (A.D. 180).

The united voice of the Senate and people pronounced him a god, and divine worship was accorded to his statue. Never was Monarchy so justified of her children as in the lives and works of the Antonines. As Merivale, in dwelling upon their virtues, very justly remarks, "the blameless career of these illustrious princes has furnished the best excuse for Cæsarism in all after-ages."

ROMAN EMPERORS FROM AUGUSTUS TO MARCUS AURELIUS.
(From 31 B.C. to A.D. 180.)