The imperial authority was gradually consolidated, because, beginning with Augustus, it succeeded in pacifying Italy after a century of commotion and civil wars and of foreign invasions, to which the secular institutions of the Republic had not known how to oppose sufficient defence; so that, little by little, right or wrong, the authority of the _Princeps_, as supreme magistrate, and the power of the Julian-Claudian house, which the supreme magistrate had organised, seemed to the Italian multitude the stable foundation of peace and order. But why was Italy, beginning with the time of Cæsar, so desperately anxious for peace and order? It would be a mistake to see in this anxiety only the natural desire of a nation, worn by anarchy, for the conditions necessary to a common social existence. The contrast of two episodes will show you that during the age of Cæsar annoyance at disorder and intolerance of it had for a special reason increased in Italy. Toward the end of the third century B.C., Italy had borne on its soil for about seventeen years the presence of an army that went sacking and burning everywhere--the army of Hannibal--without losing composure, awaiting with patience the hour for torment to cease. A century and a half later, a Thracian slave, escaping from the chain-gang with some companions, overran the country,--and Italy was frightened, implored help, stretched out its arms to Rome more despairingly than it had ever done in all the years of Hannibal. What made Italy so fearful? Because in the time of Hannibal it had chiefly cultivated cereals and pastured cattle, while in the days of Spartacus a considerable part of its fortune was invested in vineyards and olive groves. In pastoral and grain regions the invasion of an army does relatively little damage; for the cattle can be driven in advance of the invader, and if grain fields are burned, the harvest of a year is lost but the capital is not destroyed. If, instead, an army cuts and burns olive orchards and vineyards, which are many years in growing, it destroys an immense accumulated capital. Spartacus was not a new Hannibal, he was something much more dangerous; he was a new species of _Phylloxera_ or of _Mosca olearia_ in the form of brigand bands that destroyed vines and olives, the accumulated capital of centuries. Whence, the emperor became gradually a tutelary deity of the vine and the olive, the fortune of Italy. It was he who stopped the barbarians still restless and turbulent on the frontiers of Italy, hardly over the borders; it was he who kept peace within the country between social orders and political parties; it was he who looked after the maintenance and guarding of the great highways of the peninsula, periodically clearing them of robbers and the evil-disposed that infested them; and the land-owners, who held their vineyards and olive groves more at heart than they did the great republican traditions, placed the image of the Emperor among those of their