[Sidenote: His terrible energy.] The Carthaginian hero was Hannibal. We class the Carthaginians among the European nations of antiquity; for, in respect to their origin, their civilization, and all their commercial and political relations, they belonged to the European race, though it is true that their capital was on the African side of the Mediterranean Sea. Hannibal was the great Carthaginian hero. He earned his fame by the energy and implacableness of his hate. The work of his life was to keep a vast empire in a state of continual anxiety and terror for fifty years, so that his claim to greatness and glory rests on the determination, the perseverance, and the success with which he fulfilled his function of being, while he lived, the terror of the world. [Sidenote: Julius Caesar.] The Roman hero was Caesar. He was born just one hundred years before the Christian era. His renown does not depend, like that of Alexander, on foreign conquests, nor, like that of Hannibal, on the terrible energy of his aggressions upon foreign foes, but upon his protracted and dreadful contests with, and ultimate triumphs over, his rivals and competitors at home. When he appeared upon the stage, the Roman empire already included nearly all of the world that was worth possessing. There were no more conquests to be made. Caesar did, indeed, enlarge, in some degree, the boundaries of the empire; but the main question in his day was, who should possess the power which preceding conquerors had acquired. [Sidenote: The ancient Roman empire.] [Sidenote: The provinces.] The Roman empire, as it existed in those days, must not be conceived of by the reader as united together under one compact and consolidated government. It was, on the other hand, a vast congeries of nations, widely dissimilar in every respect from each other, speaking various languages, and having various customs and laws. They were all, however, more or less dependent upon, and connected with, the great central power. Some of these countries were provinces, and were governed by officers appointed and sent out by the authorities at Rome. These governors had to collect the taxes of their provinces, and also to preside over and direct, in many important respects, the administration of justice. They had, accordingly, abundant opportunities to enrich themselves while thus in office, by collecting more money than they paid over to the government at home, and by taking bribes to favor the rich man's cause in court. Thus the more wealthy and prosperous provinces were objects of great competition among aspirants for office at Rome. Leading men would get these appointments, and, after remaining long enough in their provinces to acquire a fortune, would come back to Rome, and expend it in intrigues and maneuvers to obtain higher offices still. [Sidenote: Foreign wars.]