The treatment which they experienced during a six years’ confinement was partly such as they could hope from a careful guardian, and partly such as they might dread from a suspicious tyrant. Their prison was an ancient palace, the residence of the kings of Cappadocia; the situation was pleasant, the building stately, the enclosure spacious. They pursued their studies and practised their exercises under the tuition of the most skilful masters, and the numerous household appointed to attend, or rather to guard, the nephews of Constantine was not unworthy the dignity of their birth. But they could not disguise to themselves that they were deprived of fortune, of freedom, and of safety; secluded from the society of all whom they could trust or esteem, and condemned to pass their melancholy hours in the company of slaves, devoted to the commands of a tyrant, who had already injured them beyond the hope of reconciliation. At length, however, the emergencies of the state compelled the emperor, or rather his eunuchs, to invest Gallus, in the twenty-fifth year of his age, with the title of Cæsar, and to cement this political connection by his marriage with the princess Constantina.
After a formal interview, in which the two princes mutually engaged their faith never to undertake anything to the prejudice of each other, they repaired without delay to their respective stations. Constantius continued his march towards the west, and Gallus fixed his residence at Antioch, from whence, with a delegated authority, he administered the five great dioceses of the eastern prefecture. In this fortunate change the new cæsar was not unmindful of his brother Julian, who obtained the honours of his rank, the appearances of liberty, and the restitution of an ample patrimony.
The writers the most indulgent to the memory of Gallus, and even Julian himself, though he wished to cast a veil over the frailties of his brother, are obliged to confess that the cæsar was incapable of reigning. Transported from a prison to a throne, he possessed neither genius, nor application, nor docility, to compensate for the want of knowledge and experience. A temper naturally morose and violent, instead of being corrected, was soured by solitude and adversity; the remembrance of what he had endured disposed him to retaliation rather than to sympathy; and the ungoverned sallies of his rage were often fatal to those who approached his person, or were subject to his power.
Constantina, his wife, has been described, not as a woman, but as one of the infernal furies, tormented with an insatiate thirst for human blood. Instead of employing her influence to insinuate the mild counsels of prudence and humanity, she exasperated the fierce passions of her husband; and as she retained the vanity, though she had renounced the gentleness, of her sex, a pearl necklace was esteemed an equivalent price for the murder of an innocent and virtuous nobleman.[59] The cruelty of Gallus was sometimes displayed in the undissembled violence of popular or military executions; and was sometimes disguised by the abuse of law, and the forms of judicial proceedings. The private houses of Antioch, and the places of public resort, were besieged by spies and informers; and the cæsar himself, concealed in a plebeian habit, very frequently condescended to assume that odious character. Every apartment of the palace was adorned with the instruments of death and torture, and a general consternation was diffused through the capital of Syria. The prince of the East, as if he had been conscious how much he had to fear, and how little he deserved to reign, selected for the objects of his resentment, the provincials accused of some imaginary treason, and his own courtiers, whom with more reason he suspected of incensing, by their secret correspondence, the timid and suspicious mind of Constantius. But he forgot that he was depriving himself of his only support, the affection of the people; whilst he furnished the malice of his enemies with the arms of truth, and afforded the emperor the fairest pretence of exacting the forfeit of his purple, and of his life.