In fact the lower nobility--considered as an order--had been, since the time of the Hohenstaufen, a misfortune to Germany. It was after the beginning of the thirteenth century, when the difference betwixt the noblemen and freeholders had been established by the laws, by the interests and inclinations of the Emperor, and by the limited ideal, which was formed by the aristocratic body, that the nobility gradually decayed. In the cities, undoubtedly, the old dominion of the privileged freeman was broken in the last period of the middle ages; there, in spite of all hindrances, a quicker circulation of popular strength had established itself. The labourer could become a citizen, the experienced citizen could rise to be the ruler of his city, or of a confederation of cities, and be the leader of great interests. But the landed nobleman after the beginning of the thirteenth century sank gradually into a state of isolation; labour was a disgrace to him, his acres were cultivated by dependent vassals, and he naturally endeavoured as much as possible to separate himself from them. Ever heavier became the oppression by which he kept them down; ever higher rose the pretensions which he, as lord of the land and soil, raised against his own people. But the oppression of the agriculturist was not the worst consequence of the privileged position of the noble. If he found it to his advantage to treat his beast of burden, the peasant, with moderation, he was so much the more eager to make use of his landed rights in other directions. The highroads, the river that ran by his castle, afforded him the opportunity of laying hold of the goods of strangers; he levied imposts upon goods and travellers; he obtruded his protecting escort upon them, and robbed such as considered this escort unnecessary; he built a bridge where there was no river, in order to raise a toll; he designedly kept the roads in bad condition, because he chose to consider that the goods of travelling merchants, though under the Emperor's protection, so long as they were in waggons or in vessels afloat; if the waggons were upset or vessels ran aground, belonged, according to manorial right, to the possessor of the land. Finally he became himself a robber, and with his comrades seized whatever he could lay hands on; he took the goods to his house, plundered the travellers, and kept them prisoners till they could free themselves by ransom. Nevertheless there were certain regulated observances accompanying these robberies, according to which the conscientious Junker distinguished between honourable and dishonourable plunder. But this moral code had very little to justify it. In the fourteenth and fifteenth centuries there were very few noblemen's houses which did not deserve the name of robber-holds, and still fewer out of which plundering attacks were not made.