With the passing of Hadrian, Antoninus (whatever the true nature of the relationship between Hadrian and Antoninus may have been) immediately played the part of loyal adopted son. Antoninus accompanied the body of the largely despised former emperor (at least in the view of the aristocracy) from Baiae to Rome and saw to its placement within Hadrian's new tomb in the Gardens of Domitian.
His subsequent fight to have Hadrian deified and honored among the gods of the Roman Imperial Cult (as well as, and perhaps more importantly, pardoning Hadrian's opponents who may have been slotted for execution), earned him the cognomen of "Pius". Numerous other honors were quickly voted for the new emperor including "pater patriae" (father of the country) which had been initially refused. Antoninus' wife Faustina was honored with the title Augusta (not an honor considered the norm for imperial wives) and was deified by her husband when she died 3 years later.
Antoninus' reign was one of conservative fiscal and building policies unlike both of his predecessors (Trajan and Hadrian). While Trajan and Hadrian built such great monuments as Trajan's Column, the Markets, the Pantheon, etc., Antoninus focused primarily on finishing the works of Hadrian (his Mausoleum for example) and making repairs to previously established public works. The Colosseum, the Graecostadium, the ports at Caeita and Tarracina, the bath at Ostia and an aqueduct at Antium, among roads and temples were all works that saw restoration under Antoninus. Economically, he showed reluctance for lavish expenditures which freed the treasury for the essentials of running the state and distributions to the people without a need for increased revenues. As such he was able to return all the monies raised for his accession to the people of Italy and half of all that was contributed by the provinces. While Italy saw a renewed focus as the center of the empire (as Antoninus served his entire reign within Rome and nearby) in contrast to the campaigning of Trajan and the wanderlust of Hadrian, the provinces prospered as well. Antoninus was strict with his provincial governors and tax collectors tolerating only reasonable fixed collections from these provinces, and was open to hearing complaints against his procurators for excessiveness.
Antoninus seems to have held solid popularity with all three important elements of Roman politics: the aristocracy (Senate and Equestrian classes), the populace and the legions. In the case of the Senate, he helped reverse the adversarial relationship set by Hadrian by including its members more freely in matters of advisement and routine government. More importantly however, prosecution and execution of Senators virtually ceased during his reign. In cases of provincial extortion, though he was quick to prosecute and sentence the guilty, rather than confiscate their estates for his own use as in the past, he allocated these estates to the heirs of the guilty, provided that reimbursement was made to the provinces. Only two men were noted for capital imperial punishment for treason under Antoninus. One of these two men, Atilius Titianus was condemned though the entire affair was conducted by the Senate rather than as a dictate directly from Antoninus. A second man, Priscianus apparently took his own life rather than face potential trial for aspirations to the throne, technically absolving Antoninus from the responsibility of execution. In both of these cases too, unlike many incidents of potential treason during the principate, the emperor did not allow any additional investigation of the matter beyond the men in question. In essence the cases closed with the deaths of the directly guilty, freeing their families and friends from possible implication.
In the case of the people, Antoninus won popularity through both traditional methods and his own generosity. Along with the afore-mentioned policies regarding collection of taxes and tributes, and despite the conservative fiscal style regarding the treasury, the emperor was open with his own private accounts. A famine induced shortage of wine, oils and grain was alleviated using purchases from his own private funds and distributed to the people. Laws were passed introducing new public protections for slaves and freedmen as well as giving limited rights to women in cases of arranged marriage. A new alimenta (a form of social program) was introduced in honor of his passed wife Faustina (the Faustinianae) which provided funds to care for orphaned or destitute girls. Like most previous emperors elaborate games were provided to entertain the masses. Great varieties of animals were displayed in these affairs including elephants, tigers, rhinoceroses, crocodiles and hippopotami. In addition to the famine which he alleviated through his own donations, Antoninus won great respect and popularity for his reaction to various natural disasters. The collapse of some stands in the Circus Maximus, earthquake damage in Rhodes and Asia, destruction from fire in Rome, Narbo, Antioch and Carthage were all repaired, again through his own private funds.
Though the reign of Antoninus is often considered one of peace and general prosperity, the legions were in fact quite active. While the emperor did not lead campaigns himself or conduct military affairs like Trajan and Hadrian, his legates participated in a number of engagements. In Britain, Lollius Urbicus led a successful campaign north of Hadrian's Wall which re-established the border in Caledonia near the old line established by Agricola in the reign of Domitian. A wall, Antonine's Wall, which was to mark the northern limit of these conquests was not nearly as elaborate as Hadrian's but was an indication that the Romans meant for permanent occupation of the Caledonian lowlands. Though the reasons for this campaign are not clear it is certainly an indication that the Romans were not entirely at peace, nor resigned to the fact that the outer limits of the empire had been reached (as indicated by the reversal of Trajan's conquests under Hadrian). In addition to the campaigns in Britain, the Moors in Africa were forced to peace, various Germanic and Dacian revolts or raids were checked, revolts in Achaea and Egypt were suppressed and the Jewish uprisings from the time of Trajan and Hadrian were finally ended. Despite the lack of actual military experience of Antoninus, a simple letter written by the emperor and backed by the reputation of the Roman military machine also caused the Parthians to abandon thoughts of a campaign against Armenia. According to the Historia Augusta, Antoninus was widely respected both within and without the empire, reporting that "No one has ever had such prestige among foreign nations as he, for he was ever a lover of peace, even to such a degree that he was continually quoting the saying of Scipio in which he declared that he would rather save a single citizen than slay a thousand foes."
At the age of seventy, having reigned for 23 stable and prosperous years, Antoninus Pius died in AD 161. As he was much loved, his death was mourned throughout all fabrics of Roman society. Succession (as planned years before by Hadrian) was peaceful and without incident. Antoninus' adoptive sons Marcus Aurelius and Lucius Verus took up mantle of authority in an unprecedented sharing of imperial power. The ease of this transition (though relatively short lived due to Verus' untimely death some 8 years later) was a testament to both the foresight of Hadrian and the great administrative skills of Antoninus which made that transition appear so seamless. Antoninus left the Roman treasury with an enormous surplus (in the millions of denarii) and left the bulk of his personal estate to his daughter Faustina the Younger (who had been married to Marcus Aurelius since AD 145). Despite the lack of glorious conquests often associated with periods of greatness, Antoninus' reign should be admired and revered for its noted lack of scandal, corruption and military disaster. Antoninus was remembered by Marcus Aurelius in his work "Meditations" thusly, "Be in all things Antoninus' disciple. . . . Remember all this, so that when your own last hour comes your conscience may be as clear as his." In light of the reverence paid by contemporaries and those that followed, this period in Roman history while often overlooked in the modern world, could very well be considered as the greatest era of the Roman principate.
Did you know...?
Marcus Aurelius and Lucius Verus, erected a column of red granite in Antoninus honor in the Campus Martius.