He had an imposing and winning person, and was compared by flatterers with Apollo. He was tall, broad shouldered, handsome, and of a remarkably vigorous and healthy constitution, but given to excessive vanity in his dress and outward demeanor, always wearing an oriental diadem, a helmet studded with jewels, and a purple mantle of silk richly embroidered with pearls and flowers worked in gold. His mind was not highly cultivated, but naturally clear, strong, and shrewd, and seldom thrown off its guard. He is said to have combined a cynical contempt of mankind with an inordinate love of praise. He possessed a good knowledge of human nature and administrative energy and tact.
His moral character was not without noble traits, among which a chastity rare for the time, and a liberality and beneficence bordering on wastefulness were prominent. Many of his laws and regulations breathed the spirit of Christian justice and humanity, promoted the elevation of the female sex, improved the condition of slaves and of unfortunates, and gave free play to the efficiency of the church throughout the whole empire. Altogether he was one of the best, the most fortunate, and the most influential of the Roman emperors, Christian and pagan.
Yet he had great faults. He was far from being so pure and so venerable as Eusebius, blinded by his favor to the church, depicts him, in his bombastic and almost dishonestly eulogistic biography, with the evident intention of setting him up as a model for all future Christian princes. It must, with all regret, be conceded, that his progress in the knowledge of Christianity was not a progress in the practice of its virtues. His love of display and his prodigality, his suspiciousness and his despotism, increased with his power.
The very brightest period of his reign is stained with gross crimes, which even the spirit of the age and the policy of an absolute monarch cannot excuse. After having reached, upon the bloody path of war, the goal of his ambition, the sole possession of the empire, yea, in the very year in which he summoned the great council of Nicæa, he ordered the execution of his conquered rival and brother-in-law, Licinius, in breach of a solemn promise of mercy (324). Not satisfied with this, he caused soon afterward, from political suspicion, the death of the young Licinius, his nephew, a boy of hardly eleven years. But the worst of all is the murder of his eldest son, Crispus, in 326, who had incurred suspicion of political conspiracy, and of adulterous and incestuous purposes toward his stepmother Fausta, but is generally regarded as innocent. This domestic and political tragedy emerged from a vortex of mutual suspicion and rivalry, and calls to mind the conduct of Philip II. toward Don Carlos, of Peter the Great toward his son Alexis, and of Soliman the Great toward his son Mustapha. Later authors assert, though gratuitously, that the emperor, like David, bitterly repented of this sin. He has been frequently charged besides, though it would seem altogether unjustly, with the death of his second wife Fausta (326?), who, after twenty years of happy wedlock, is said to have been convicted of slandering her stepson Crispus, and of adultery with a slave or one of the imperial guards, and then to have been suffocated in the vapor of an overheated bath. But the accounts of the cause and manner of her death are so late and discordant as to make Constantine's part in it at least very doubtful.
At all events Christianity did not produce in Constantine a thorough moral transformation. He was concerned more to advance the outward social position of the Christian religion, than to further its inward mission. He was praised and censured in turn by the Christians and pagans, the orthodox and the Arians, as they successively experienced his favor or dislike. He bears some resemblance to Peter the Great, both in his public acts and his private character, by combining great virtues and merits with monstrous crimes, and he probably died with the same consolation as Peter, whose last words were: 'I trust that in respect of the good I have striven to do my people (the church), God will pardon my sins.' It is quite characteristic of his piety that he turned the sacred nails of the Saviour's cross, which Helena brought from Jerusalem, the one into the bit of his war horse, the other into an ornament of his helmet. Not a decided, pure, and consistent character, he stands on the line of transition between two ages and two religions; and his life bears plain marks of both. When at last on his deathbed he submitted to baptism, with the remark, 'Now let us cast away all duplicity,' he honestly admitted the conflict of two antagonistic principles which swayed his private character and public life.
From these general remarks we turn to the leading features of Constantine's life and reign, so far as they bear upon the history of the church. We shall consider in order his youth and training, the vision of the cross, the edict of toleration, his legislation in favor of Christianity, his baptism and death.
Constantine, son of the co-emperor Constantius Chlorus, who reigned over Gaul, Spain, and Britain till his death in 306, was born probably in the year 272, either in Britain or at Naissus (now called Nissa), a town of Dardania, in Illyricum. His mother was Helena, daughter of an innkeeper, the first wife of Constantius, afterward divorced, when Constantius, for political reasons, married a daughter of Maximian. She is described by Christian writers as a discreet and devout woman, and has been honored with a place in the catalogue of saints. Her name is identified with the discovery of the cross and the pious superstitions of the holy places. She lived to a very advanced age, and died in the year 326 or 327, in or near the city of Rome. Rising by her beauty and good fortune from obscurity to the splendor of the court, then meeting the fate of Josephine, but restored to imperial dignity by her son, and ending as a saint of the Catholic church: Helena would form an interesting subject for a historical novel illustrating the leading events of the Nicene age and the triumph of Christianity in the Roman empire.
Constantine first distinguished himself in the service of Diocletian in the Egyptian and Persian wars; went afterward to Gaul and Britain, and in the Prætorium at York was proclaimed emperor by his dying father and by the Roman troops. His father before him held a favorable opinion of the Christians as peaceable and honorable citizens, and protected them in the West during the Diocletian persecution in the East. This respectful, tolerant regard descended to Constantine, and the good effects of it, compared with the evil results of the opposite course of his antagonist Galerius, could but encourage him to pursue it. He reasoned, as Eusebius reports from his own mouth, in the following manner: 'My father revered the Christian God, and uniformly prospered, while the emperors who worshipped the heathen gods, died a miserable death; therefore, that I may enjoy a happy life and reign, I will imitate the example of my father and join myself to the cause of the Christians, who are growing daily, while the heathen are diminishing.' This low utilitarian consideration weighed heavily in the mind of an ambitious captain, who looked forward to the highest seat of power within the gift of his age. Whether his mother, whom he always revered, and who made a pilgrimage to Jerusalem in her eightieth year (A. D. 325), planted the germ of the Christian faith in her son, as Theodoret supposes, or herself became a Christian through his influence, as Eusebius asserts, must remain undecided. According to the heathen Zosimus, whose statement is unquestionably false and malicious, an Egyptian, who came out of Spain (probably the bishop Hosius of Cordova, a native of Egypt, is intended), persuaded him, after the murder of Crispus (which did not occur before 326), that by converting to Christianity he might obtain forgiveness of his sins.
The first public evidence of a positive leaning toward the Christian religion he gave in his contest with the pagan Maxentius, who had usurped the government of Italy and Africa, and is universally represented as a cruel, dissolute tyrant, hated by heathens and Christians alike. Called by the Roman people to their aid, Constantine marched from Gaul across the Alps with an army of ninety-eight thousand soldiers of every nationality, and defeated Maxentius in three battles; the last in October, 312, at the Milvian bridge, near Rome, where Maxentius found a disgraceful death in the waters of the Tiber.
Here belongs the familiar story of the miraculous cross. The precise day and place cannot be fixed, but the event must have occurred shortly before the final victory over Maxentius in the neighborhood of Rome. As this vision is one of the most noted miracles in church history, and has a representative significance, it deserves a closer examination. It marks for us on the one hand the victory of Christianity over paganism in the Roman empire, and on the other the ominous admixture of foreign, political, and military interests with it. We need not be surprised that in the Nicene age so great a revolution and transition should have been clothed with a supernatural character.