With the spread of her foreign conquests, Rome herself was subjugated by a rapid revolution in thought and habit. From the middle of the second century before Christ, we look in vain for the old Republic. Religion, manners, morals, occupations, amusements--all have changed. The old-time Roman character is passing away, like a tide, through the narrowing channel of the ever-decreasing number of those who cling to the ancient ideals. Morality has started upon that ebb of which the days of Caligula and Nero saw the lowest mark to which a civilized people ever fell. The Romans could not withstand the temptations incidental to conquest. Physically invincible, they were not armed against the onset of foreign vices. The State grew inordinately wealthy by pillage and exaction; a single campaign yielded booty to the value of nine million six hundred thousand dollars. Scipio wept when he took Carthage; for well he knew that his people were in no way prepared to assume such extensive dominion, except at the cost of national character. Polybius says that after the conquest of Macedon men believed themselves able to enjoy in all security the conquest of the world and the spoils thereof.
But wealth was not the sole constituent of the harvest gathered in by Roman swords. After the transmarine wars, new ideas and Greek learning became common among a people who were not adapted, as the Greeks, to mere theorizing, but carried out their thoughts, whether for good or ill, to the full extent of their powers. The consequence was that Rome plunged with deadly earnestness into newly acquired vices; and the novel teachings of Hellenism, instead of elevating the minds of the people, served only to create indifference to the ancient divinities. "You ask," says Juvenal, "whence arise our disorders? A humble life in other days preserved the innocence of the Latin women. Protracted vigils, hands hardened by toil, Hannibal at the gates of Rome, and Roman citizens in arms upon her walls, guarded from vice the modest dwellings of our fathers. Now we endure the evils of a long peace; luxury has fallen upon us, more formidable than the sword, and the conquered world has avenged itself upon us by the gift of its vices. Since Rome has lost her noble poverty, Sybaris and Rhodes, Miletus and Tarentum, crowned with roses and scented with perfumes, have entered our walls." All the ancient writers agree upon the same verdict. The old austerity of life was more the result of poverty than of conscience; the simple habits of the first centuries of the Republic were cherished only so long as there were no means to render them more luxurious. Had wealth come to Rome through industry, the slower process, which alone develops the power of appreciation, would have fitted the people to make good use of their better fortune.