The terrible condition of affairs at the capital favored the ambition of Pompey. So selfish and corrupt were the members of the Senate, so dead to all virtue and to every sentiment of patriotism were the people, that even such patriots as Cato and Cicero saw no hope for the maintenance of the republic. The former favored the appointment of Pompey as sole consul for one year, which was about the same thing as making him dictator. "It is better," said Cato, "to choose a master than to wait for the tyrant whom anarchy will impose upon us." The "tyrant" in his and everybody's mind was Cæsar.
Pompey now broke with Cæsar, and attached himself again to the old aristocratic party, which he had deserted for the alliance and promises of the triumvirate. The death at this time of his wife Julia, the daughter of Cæsar, severed the bonds of relationship at the same moment that those of ostensible friendship were broken.
The Senate, hostile to Cæsar, now issued a decree that he should resign his office, and disband his Gallic legions by a stated day. The crisis had now come. Cæsar ordered his legions to hasten from Gaul into Italy. Without waiting for their arrival, at the head of a small body of veterans that he had with him at Ravenna, he crossed the Rubicon, a little stream that marked the boundary of his province. This was a declaration of war. As he plunged into the river, he exclaimed, "The die is cast."
THE CIVIL WAR OF CÆSAR AND POMPEY (49-48 B.C.).--The bold movement of Cæsar produced great consternation at Rome. Realizing the danger of delay, Cæsar, without waiting for the Gallic legions to join him, marched southward. One city after another threw open its gates to him; legion after legion went over to his standard. Pompey and the Senate hastened from Rome to Brundisium, and thence, with about twenty-five thousand men, fled across the Adriatic into Greece. Within sixty days Cæsar made himself undisputed master of all Italy.
Pompey and Cæsar now controlled the Roman world. It was large, but not large enough for both these ambitious men. As to which was likely to become sole master, it were difficult for one watching events at that time to foresee. Cæsar held Italy, Illyricum, and Gaul, with the resources of his own genius and the idolatrous attachment of his soldiers; Pompey controlled Spain, Africa, Sicily, Sardinia, Greece, and the provinces of Asia, with the prestige of his great name and the indefinite resources of the East.