The marriage of the clergy was everywhere more or less repugnant to the general feeling of Christendom. The rise and progress of asceticism in the Church had their source in human nature, and its growth was quickened by a reaction from the immorality of paganism. The general effect on the position of the clergy was to compel them to keep progress with the prevailing movement. Men consecrated to the service of Jehovah must rise superior to the common herd of their fellow-creatures. By a decree of Pope Siricius at the end of the fourth century marriage was interdicted to all priests and deacons. This decree was, however, very imperfectly observed during the following centuries. The general feeling was, however, at this time very strongly against the married clergy. But throughout the spiritual realm of Hildebrand in Italy, from Calabria to the Alps, the clergy had risen up in rebellion against him and the popes his predecessors when they attempted to coerce them into celibacy. We believe that this opposition, much more than the strife as to investitures, was the cause of the strong feeling, almost unprecedented, which existed against Gregory VII. We must now show that Gregory enforced his views as to investitures. This part of our subject is important, because it gave occasion for the assertion that the pope could depose the Holy Roman emperor and the king of Italy, if he should find him morally or physically disqualified for fulfilling the condition on which his appointment depended--that he should defend him from his enemies. Henry IV, at the beginning of his reign only ten years of age, was at this time Emperor.[28] [Footnote 28: That is, Emperor of the Holy Roman Empire, which included the German-speaking people of Europe, and also, in theory at least, Italy.] One day, as he was standing by the Rhine, a galley with silken streamers appeared, into which he was invited to enter. After he had been gliding for some time down the stream, he found that he was a prisoner. The archbishops of Milan and Cologne, with other powerful lords, having consigned him to a degrading captivity, administered, in his name, the government of the empire. By affording him every means of vicious indulgence, they were only too successful in corrupting a noble and generous nature. Very soon he was guilty of crimes, and plunged into excesses which seemed to cry aloud for vengeance.