Detail by detail, Mr. Baring-Gould takes the incidents of his reign, and show how the plot was worked up against him, and every happening, all his deeds and motives, colorless or finely colored, given a coat of pitch. We can only glance at one or two points here: his relations with Germanicus, and with Agrippina; the rise and fall of Sejanus.
Germanicus, his nephew, was fighting on the Rhine when Tiberius came to the throne. There was a mutiny; which Germanicus quelled with much loss of dignity and then with much bloodshed. To cover the loss of dignity, he embarked on gay adventures against the Germans; and played the fool a little, losing some few battles. Tiberius, who understood German affairs better than any man living, wanted peace in that quarter; and recalled Germanicus; then, lest there should be any flavor of disgrace in the recall, sent him on a mission to the East. Your textbooks will tell you he recalled him through jealousy of his brilliant exploits. Germanicus being something flighty of disposition, the emperor sent with him on his new mission a rough old fellow by the name of Calpurnius Piso to keep a weather eye open on him, and neutralize, as far as might be, extravagant actions. The choice, it must be said, was a bad one; for the two fought like cat and dog the better part of the time. Then Germanicus died, supposing that Piso had poisoned him; and Agrippina his wife came home, an Ate shrieking for revenge. She had exposed her husband's naked body in the marketplace at Antioch, that all might see he had been poisoned; which shows the kind of woman she was. Germanicus was given a huge funeral at Rome; he was the darling of the mob, and the funeral was really a demonstration against Tiberius. then Piso was to be tried for the murder: a crabbed but honest old plebeian of good and ancient family, who Tiberius knew well enough was innocent. There were threats of mob violence if he should be acquitted; and the suggestion studiously sown that Piso, guilty, had been set on to the murder by the Princeps. Tiberius, knowing the popular feeling, did not attend the funeral of his nephew. It was a mistake in policy, perhaps; but his experience had been unpleasant enought at the funeral of Augustus. Tacitus says he stayed away fearing lest the public, peering into his face thus from close to, might see the marks of dissimulation in it, and realize that his grief was hypocrisy. How the devil did Tacitus know? Yet what he says comes down as gospel.
This sort of thing went on continually, and provided him a poor atmosphere in which to do his great and important work. As he grew older, he retired more and more. He trusted in his minister Sejanus who had once heroically save his life: an exceedingly able, but unfortunately also an exceedingly wicked man. Sejanus became his link with Rome and the senate; and used that position, and the senate's incompetence, to gather into his own hands a power practically absolute in home affairs. Home affairs, be it always remembered, were what the Princeps expected the senate to attend to: their duty, under the constitution. Instead, however, they fawned on Sejanus ad lib. Sejanus murdered Tiberius' son Drusus, and aspired to the hand of Livilla, his widow: she was the daughter of Germanicus and Agrippina; and she certainly, and Agrippina probably, were accessories to the murder of Drusus. For Agrippina was obsessed with hatred for Tiberius: with the idea that he had murdered her husband, and with thirst for revenge. Sejanus was thus in a fair way to the ends of his ambition: to be named the successor to the Principate.
Then Tiberius found him out; and sent a message to a senate engaged in Sejanus-worship, demanding the punishment of the murderers of Drusus.
Sejanus had built up his power by fostering the system of delation. There was no public prosecutor in the Roman system: when any wrong had been done, it was anyone's business to prosecute. The end of education was rhetoric, that you might get on in life. The first step was to bring an accusation against some public man, and support it with a mighty telling speech. If you succeeded, and killed your man,—why, then your name was made. On this system, with developments of his own, Sejanus had built; had employed one half of Rome informing against the other. It took time to bring about; but he had worked up by degrees a state of things in which all went in terror of him; and the senate was eager perpetually to condemn any one he might recommend for condemnation. When Tiberius found him out, they lost their heads entirely, and simply tumbled over themselves in their anxiety to accuse, condemn, and execute each other. Everyone was being informed against as having been a friend of Sejanus, and therefore an enemy of their dear Princeps; who was away at Capri attending to his duty; and whose ears, now Sejanus was gone, they might hope to reach with flatteries. You supped with your friend overnight; did your best to diddle him into saying something over the wine-cups;—then rose betimes in the morning to accuse him of saying it: only too often to find that he, (traitorly wretch!) had risen half an hour earlier and accused you; so you missed your breakfast for nothing; and dined (we may hope) in a better world. Thus during the last years of the reign there was a Terror in Rome: in the senate's sphere of influence; the senatorial class the sufferers and inflictors of the suffering. Meanwhile Tiberius in his retirement was still at his duty; his hold on his provinces never relaxed. When the condemned appealed to him, the records show that in nearly every case their sentences were commuted. Tiberius' enemies were punishing themselves; but the odium of it has been fastened on Tiberius. He might have interfered, you say?—What! with Karma? I doubt.
His sane, balanced, moderate character comes out in his own words again and again: he was a wonderful anomaly in that age. Rome was filled with slanders against him; and the fulsome senate implored him to punish the slanderers. "We have not much time to spare," Tiberius answered; "we need not involve ourselves in this additional business." "If any man speaks ill of me, I shall take care so to behave as to be able to give a good accound of my words and acts, and so confound him. If he speaks ill of me after that, it will be time enough for me to think about hating him." Permission was asked to raise a temple to him in Spain; he refused to grant it, saying that if every emperor was to be worshiped, the worship of Augustus would lose its meaning. "For myself, a mere mortal, it is enough for me if I do my duties as a mortal; I am content if posterity recognises that… This is the only temple I desire to have raised in my honor,—and this only in men's hearts."—the senate, in a spasm of flattery, offered to swear in advance to all his acts. He forbade it, saying in effect that he was doing and proposed to do his best; but all things human were liable to change, and he would not have them endorsing the future acts of one who by the mere failure of his faculties might do wrong.
In those sayings, I think, you get the man: perhaps a disciple only, and never actually a Master; perhaps never absolutely sure of himself, but only of his capacity and determination to do his duty day by day: his own duty, and not other men's:—never setting himself on a level with his Teacher; or thinking himself able, of his own abilities, to run the world, as Augustus had had the power and the mission to do,—but as probably no man might have had the power to do in Tiberius' time;—and by virtue of that faith, that high concentration on duty, carrying the world (but not Rome) through in spite of Rome, which had become then a thing incurable, nothing more than an infection and lamentable scab.
He left it altogether in his last years; its atmosphere and bitterness were too much for him. Form the quiet at Capri he continued to rule his provinces until the end; ever hoping that if he did his duty, someone or some spirit might arise in the senate to do theirs. Tacitus explains his retirement—as Roman society had explained it when it happened,—thus: Being then seventy-two years old, Tiberius, whose life up to that time had been irreproachable and untouched by gossip, went to Capri to have freedom and privacy for orgies of personal vice. But why did he not stay at Rome for his orgies: doing at Rome as the Romans did, and thereby perhaps earning a measure of popularity?
Over the bridge Augustus, western humanity had made the crossing; but on the further shore, there had to be a sacrifice to the Fates. Tiberius was the sacrifice. And that sacrifice was not in vain. We get one glimpse through provincial (and therefore undiseased) eyes of the empire he built up in the provinces. It is from Philo Judaeus, a Jewish Theosophist of Alexandria, who came to Rome in the reign of Caligula, Tiberius' successor. (Tiberius, it must be said, appointed no successor; there was none for him to appoint.) Caligula, says Philo,
"….succeeded to an empire that was well organized, tending everywhere to conceed—north, south, east, and west brought into friendship; Greeks and barbarians routed, soldiers and civilians linked together in the bonds of a happy peace."