The minds of the people were filled with astonishment and grief, with indignation and terror, when they were informed that the unworthy successor of Julian relinquished the five provinces which had been acquired by the victory of Galerius, and shamefully surrendered to the barbarians the important city of Nisibis, the firmest bulwark of the provinces of the East. The deep and dangerous question, how far the public faith should be observed, when it becomes incompatible with the public safety, was freely agitated in popular conversation; and some hopes were entertained, that the emperor would redeem his pusillanimous behaviour by a splendid act of patriotic perfidy. The inflexible spirit of the Roman senate had always disclaimed the unequal conditions which were extorted from the distress of her captive armies; and, if it were necessary to satisfy the national honour by delivering the guilty general into the hands of the barbarians, the greatest part of the subjects of Jovian would have cheerfully acquiesced in the precedent of ancient times.
But the emperor, whatever might be the limits of his constitutional authority, was the absolute master of the laws and arms of the state; and the same motives which had forced him to subscribe, now pressed him to execute, the treaty of peace. He was impatient to secure an empire at the expense of a few provinces; and the respectable names of religion and honour concealed the personal fears and ambition of Jovian. Notwithstanding the dutiful solicitations of the inhabitants, decency, as well as prudence, forbade the emperor to lodge in the palace of Nisibis; but the next morning after his arrival, Bineses, the ambassador of Persia, entered the place, displayed from the citadel the standard of the Great King, and proclaimed, in his name, the cruel alternative of exile or servitude. The principal citizens of Nisibis, who till that fatal moment had confided in the protection of their sovereign, threw themselves at his feet. They conjured him not to abandon, or at least not to deliver, a faithful colony to the rage of a barbarian tyrant, exasperated by the three successive defeats which he had experienced under the walls of Nisibis. They still possessed arms and courage to repel the invaders of their country; they requested only the permission of using them in their own defence; and as soon as they had asserted their independence, they should implore the favour of being again admitted into the ranks of his subjects. Their arguments, their eloquence, their tears, were ineffectual. Jovian alleged, with some confusion, the sanctity of oaths; and, as the reluctance with which he accepted the present of a crown of gold convinced the citizens of their hopeless condition, the advocate Sylvanus was provoked to exclaim, “O emperor! may you thus be crowned by all the cities of your dominions!”
Jovian, who in a few weeks had easily learned to assume the habits of a prince, was displeased with freedom and offended with truth; and as he reasonably supposed that the discontent of the people might incline them to submit to the Persian government, he published an edict, under pain of death, that they should leave the city within the term of three days. The savage insensibility of Jovian appears to have aggravated the hardships of these unhappy fugitives. They were seated, however, in a new-built quarter of Amida; and that rising city, with the reinforcement of a very considerable colony, soon recovered its former splendour, and became the capital of Mesopotamia. Similar orders were despatched by the emperor for the evacuation of Singara and the castle of the Moors; and for the restitution of the five provinces beyond the Tigris. Sapor enjoyed the glory and the fruits of his victory; and this ignominious peace has justly been considered as a memorable era in the decline and fall of the Roman Empire.
After Jovian had performed those engagements, which the voice of his people might have tempted him to violate, he hastened away from the scene of his disgrace, and proceeded with his whole court to enjoy the luxury of Antioch.
Ammianus has left us a terse description of the personal traits of the emperor. “Jovian,” he says, “was slow in his movements, of a cheerful countenance, with blue eyes, very tall, so much so that it was long before any of the royal robes could be found to fit him. He was anxious to imitate Constantius, often occupying himself with serious business till after midday, and being fond of jesting with his friends in public. He was given to the study of the Christian law, sometimes doing it marked honour; he was tolerably learned in it, very well inclined to its professors, and disposed to promote them to be judges, as was seen in some of his appointments. He was fond of eating and addicted to wine and women.”