From his palace, or, more properly, from his headquarters, of Sirmium and Naissus, he distributed to the principal cities of the empire a laboured apology for his own conduct; published the secret despatches of Constantius; and solicited the judgment of mankind between two competitors, the one of whom had expelled, and the other had invited the barbarians. Julian, whose mind was deeply wounded by the reproach of ingratitude, aspired to maintain, by argument as well as by arms, the superior merits of his cause; and to excel, not only in the arts of war, but in those of composition. His epistle to the senate and people of Athens seems to have been dictated by an elegant enthusiasm, which prompted him to submit his actions and his motives to the degenerate Athenians of his own times, with the same humble deference, as if he had been pleading in the days of Aristides, before the tribunal of the Areopagus. His application to the senate of Rome, which was still permitted to bestow the titles of imperial power, was agreeable to the forms of the expiring republic. An assembly was summoned by Tertullus, prefect of the city; the epistle of Julian was read; and as he appeared to be master of Italy, his claims were admitted without a dissenting voice. His oblique censure of the innovations of Constantine, and his passionate invective against the vices of Constantius, were heard with less satisfaction; and the senate, as if Julian had been present, unanimously exclaimed: “Respect, we beseech you, the author of your own fortune,” an artful expression, which, according to the chance of war, might be differently explained, as a manly reproof of the ingratitude of the usurper, or as a flattering confession, that a single act of such benefit to the state ought to atone for all the failings of Constantius.
The intelligence of the march and rapid progress of Julian was speedily transmitted to his rival, who, by the retreat of Sapor, had obtained some respite from the Persian War. Disguising the anguish of his soul under the semblance of contempt, Constantius professed his intention of returning into Europe, and of giving chase to Julian; for he never spoke of his military expedition in any other light than that of a hunting party. In the camp of Hierapolis, in Syria, he communicated this design to his army; slightly mentioned the guilt and rashness of the cæsar; and ventured to assure them, that if the mutineers of Gaul presumed to meet them in the field, they would be unable to sustain the fire of their eyes, and the irresistible weight of their shout of onset. The speech of the emperor was received with military applause, and Theodotus, the president of the council of Hierapolis, requested, with tears of adulation, that his city might be adorned with the head of the vanquished rebel. A chosen detachment was despatched away in post wagons, to secure, if it were yet possible, the pass of Succi; the recruits, the horses, the arms, and the magazines which had been prepared against Sapor, were appropriated to the service of the civil war; and the domestic victories of Constantius inspired his partisans with the most sanguine assurances of success. The notary Gaudentius had occupied in his name the provinces of Africa; the subsistence of Rome was intercepted; and the distress of Julian was increased, by an unexpected event, which might have been productive of fatal consequences. Julian had received the submission of two legions and a cohort of archers, who were stationed at Sirmium; but he suspected, with reason, the fidelity of those troops which had been distinguished by the emperor; and it was thought expedient, under the pretence of the exposed state of the Gallic frontier, to dismiss them from the most important scene of action. They advanced, with reluctance, as far as the confines of Italy; but, as they dreaded the length of the way, and the savage fierceness of the Germans, they resolved, by the instigation of one of their tribunes, to halt at Aquileia, and to erect the banners of Constantius on the walls of that impregnable city. The vigilance of Julian perceived at once the extent of the mischief, and the necessity of applying an immediate remedy. By his order, Jovinus led back a part of the army into Italy; and the siege of Aquileia was formed with diligence, and prosecuted with vigour. But the legionaries, who seemed to have rejected the yoke of discipline, conducted the defence of the place with skill and perseverance; invited the rest of Italy to imitate the example of their courage and loyalty; and threatened the retreat of Julian, if he should be forced to yield to the superior numbers of the armies of the East.
THE DEATH OF CONSTANTIUS; JULIAN SOLE EMPEROR