The Imperial slave was eager to secure the favor of his master by an act of treason to his native country. He conducted Sapor over the Euphrates, and, by the way of Chalcis, to the metropolis of the East. So rapid were the motions of the Persian cavalry, that, if we may credit a very judicious historian, 141 the city of Antioch was surprised when the idle multitude was fondly gazing on the amusements of the theatre. The splendid buildings of Antioch, private as well as public, were either pillaged or destroyed; and the numerous inhabitants were put to the sword, or led away into captivity. 142 The tide of devastation was stopped for a moment by the resolution of the high priest of Emesa. Arrayed in his sacerdotal robes, he appeared at the head of a great body of fanatic peasants, armed only with slings, and defended his god and his property from the sacrilegious hands of the followers of Zoroaster. 143 But the ruin of Tarsus, and of many other cities, furnishes a melancholy proof that, except in this singular instance, the conquest of Syria and Cilicia scarcely interrupted the progress of the Persian arms. The advantages of the narrow passes of Mount Taurus were abandoned, in which an invader, whose principal force consisted in his cavalry, would have been engaged in a very unequal combat: and Sapor was permitted to form the siege of Caesarea, the capital of Cappadocia; a city, though of the second rank, which was supposed to contain four hundred thousand inhabitants. Demosthenes commanded in the place, not so much by the commission of the emperor, as in the voluntary defence of his country. For a long time he deferred its fate; and when at last Caesarea was betrayed by the perfidy of a physician, he cut his way through the Persians, who had been ordered to exert their utmost diligence to take him alive. This heroic chief escaped the power of a foe who might either have honored or punished his obstinate valor; but many thousands of his fellow-citizens were involved in a general massacre, and Sapor is accused of treating his prisoners with wanton and unrelenting cruelty. 144 Much should undoubtedly be allowed for national animosity, much for humbled pride and impotent revenge; yet, upon the whole, it is certain, that the same prince, who, in Armenia, had displayed the mild aspect of a legislator, showed himself to the Romans under the stern features of a conqueror. He despaired of making any permanent establishment in the empire, and sought only to leave behind him a wasted desert, whilst he transported into Persia the people and the treasures of the provinces. 145
At the time when the East trembled at the name of Sapor, he received a present not unworthy of the greatest kings; a long train of camels, laden with the most rare and valuable merchandises. The rich offering was accompanied with an epistle, respectful, but not servile, from Odenathus, one of the noblest and most opulent senators of Palmyra. “Who is this Odenathus,” (said the haughty victor, and he commanded that the present should be cast into the Euphrates,) “that he thus insolently presumes to write to his lord? If he entertains a hope of mitigating his punishment, let him fall prostrate before the foot of our throne, with his hands bound behind his back. Should he hesitate, swift destruction shall be poured on his head, on his whole race, and on his country.” 146 The desperate extremity to which the Palmyrenian was reduced, called into action all the latent powers of his soul. He met Sapor; but he met him in arms.
Infusing his own spirit into a little army collected from the villages of Syria 147 and the tents of the desert, 148 he hovered round the Persian host, harassed their retreat, carried off part of the treasure, and, what was dearer than any treasure, several of the women of the great king; who was at last obliged to repass the Euphrates with some marks of haste and confusion. 149 By this exploit, Odenathus laid the foundations of his future fame and fortunes. The majesty of Rome, oppressed by a Persian, was protected by a Syrian or Arab of Palmyra.
The voice of history, which is often little more than the organ of hatred or flattery, reproaches Sapor with a proud abuse of the rights of conquest. We are told that Valerian, in chains, but invested with the Imperial purple, was exposed to the multitude, a constant spectacle of fallen greatness; and that whenever the Persian monarch mounted on horseback, he placed his foot on the neck of a Roman emperor. Notwithstanding all the remonstrances of his allies, who repeatedly advised him to remember the vicissitudes of fortune, to dread the returning power of Rome, and to make his illustrious captive the pledge of peace, not the object of insult, Sapor still remained inflexible. When Valerian sunk under the weight of shame and grief, his skin, stuffed with straw, and formed into the likeness of a human figure, was preserved for ages in the most celebrated temple of Persia; a more real monument of triumph, than the fancied trophies of brass and marble so often erected by Roman vanity. 150 The tale is moral and pathetic, but the truth † of it may very fairly be called in question. The letters still extant from the princes of the East to Sapor are manifest forgeries; 151 nor is it natural to suppose that a jealous monarch should, even in the person of a rival, thus publicly degrade the majesty of kings. Whatever treatment the unfortunate Valerian might experience in Persia, it is at least certain that the only emperor of Rome who had ever fallen into the hands of the enemy, languished away his life in hopeless captivity.
The emperor Gallienus, who had long supported with impatience the censorial severity of his father and colleague, received the intelligence of his misfortunes with secret pleasure and avowed indifference. “I knew that my father was a mortal,” said he; “and since he has acted as it becomes a brave man, I am satisfied.” Whilst Rome lamented the fate of her sovereign, the savage coldness of his son was extolled by the servile courtiers as the perfect firmness of a hero and a stoic. 152 It is difficult to paint the light, the various, the inconstant character of Gallienus, which he displayed without constraint, as soon as he became sole possessor of the empire. In every art that he attempted, his lively genius enabled him to succeed; and as his genius was destitute of judgment, he attempted every art, except the important ones of war and government. He was a master of several curious, but useless sciences, a ready orator, an elegant poet, 153 a skilful gardener, an excellent cook, and most contemptible prince. When the great emergencies of the state required his presence and attention, he was engaged in conversation with the philosopher Plotinus, 154 wasting his time in trifling or licentious pleasures, preparing his initiation to the Grecian mysteries, or soliciting a place in the Arcopagus of Athens. His profuse magnificence insulted the general poverty; the solemn ridicule of his triumphs impressed a deeper sense of the public disgrace. 155 The repeated intelligence of invasions, defeats, and rebellions, he received with a careless smile; and singling out, with affected contempt, some particular production of the lost province, he carelessly asked, whether Rome must be