Nor was their gloom groundless: in spite of their honest plans and of brilliant appearances, the degradation, material as well as moral, of Roman society went on increasing. The wars, the luxury, the dilapidations, and the disturbances of the empire always raised its expenses much above its receipts. The rough miserliness of Vespasian and the wise economy of Antoninus Pius were far from sufficient to restore the balance; the aggravation of imposts was incessant; and the population, especially the agricultural population, dwindled away more and more, in Italy itself, the centre of the state. This evil disquieted the emperors, when they were neither idiots nor madmen; Claudius, Vespasian, Nerva, and Trajan labored to supply a remedy, and Augustus himself had set them the example. They established in Italy colonies of veterans to whom they assigned lands; they made gifts thereof to indigent Roman citizens; they attracted by the title of senator rich citizens from the provinces, and when they had once installed them as landholders in Italy, they did not permit them to depart without authorization. Trajan decreed that every candidate for the Roman magistracies should be bound to have a third of his fortune invested in Italian land, “in order,” says Pliny the Younger, “that those who sought the public dignities should regard Rome and Italy not as an inn to put up at in travelling, but as their home.” And Pliny the Elder, going as a philosophical observer to the very root of the evil, says, in his pompous manner, “In former times our generals tilled their fields with their own hands; the earth, we may suppose, opened graciously beneath a plough crowned with laurels and held by triumphal hands, maybe because those great men gave to tillage the same care that they gave to war, and that they sowed seed with the same attention with which they pitched a camp; or maybe, also, because everything fructifies best in honorable hands, because everything is done with the most scrupulous exactitude. . . . Nowadays these same fields are given over to slaves in chains, to malefactors who are condemned to penal servitude, and on whose brow there is a brand. Earth is not deaf to our prayers; we give her the name of mother; culture is what we call the pains we bestow on her . . . but can we be surprised if she render not to slaves the recompense she paid to generals?” What must have been the decay of population and of agriculture in the provinces, when even in Italy there was need of such strong protective efforts, which were nevertheless so slightly successful? Pliny had seen what was the fatal canker of the Roman empire in the country as well as in the towns: slavery or semi-slavery.