"'By the King of Heaven I care little for your nobility and beauty, however others may admire you. You may hold it for certain that, if you do not make amends for your past negligence by vigilant zeal, you will never obtain any thing from Charles.'"[6] Wherever Charlemagne led his legions, he baptized the vanquished; and the conquered tribes and nations called themselves Christians. The ignorant barbarians eagerly accepted the sacrament for the sake of the white baptismal robe which was given to each proselyte. The vast empire of Charlemagne under his effeminate successors rapidly crumbled to pieces. In ceaseless conflicts and fluctuations the chiefs of the tribes, or nobles, gradually regained the power which had been wrested from them by Charlemagne. Upon the ruins of the empire arose the feudal system, and France became a monarchy but in name. The throne, shorn of its energies, retained but the shadow of power. Haughty dukes, surrounded by their warlike retainers, and impregnable in massive castles which had been the work of ages, exercised over their own vassals all the prerogatives of royalty, and often eclipsed the monarch in wealth and splendor. The power of the duke became so absolute over the serfs who tilled his acres, and who timidly huddled for protection beneath the ramparts of the castle, that, in the language of the feudal code, the duke "might take all they had, alive or dead, and imprison them when he pleased, being accountable to none but God." France again became but a conglomeration of independent provinces, with scarcely any bond of union. The whole landscape was dotted with castles strongly built upon the river's bluff, or upon the craggy hill. These baronial fortresses, massive and sombre, were flanked by towers pierced with loop-holes and fortified with battlements. A ditch often encircled the walls, and an immense portcullis or suspended gate could at any moment be let down, to exclude all entrance. The apartments were small and comfortless, with narrow and grated windows. There was one large banqueting-hall, the seat of baronial splendor, where the lord met his retainers and vassals in intercourse in which aristocratic supremacy and democratic equality were most strangely blended. Every knight swore fealty to the baron, the baron to the duke, the duke to the king. The sovereign could claim military service from his vassals, but could exercise no power over their serfs, either legislative or judicial. It not unfrequently happened that some duke had a larger retinue and a richer income than the king himself.