In their resistance to the German attack the popes never hesitated at any means. They prompted Prince Henry to revolt against their great antagonist, his father; they intervened, not to rebuke, but to abet him, when he threw his father into prison and deprived him of the necessaries of life. They carried their vengeance beyond the grave. When the aged emperor, broken in heart, escaped from their torment, and was honourably buried by the Bishop of Liège, that prelate was forthwith excommunicated and compelled to disinter the corpse. But crimes like these, against which human nature revolts, meet with retribution. [Sidenote: Resistance of Henry V.] This same Prince Henry, becoming Henry V., was forced by circumstances to resume his father's quarrel, and to refuse to yield his right of granting investitures. He marched upon Rome, and at the point of the sword compelled his adversary, Pope Paschal II., to surrender all the possessions and royalties of the Church--compelled him to crown him emperor--not, however, until the pontiff had been subjected to the ignominy of imprisonment, and brought into condemnation among his own party. [Sidenote: Bernard of Clairvaux stimulates the second crusade.] Things seemed to be going to ruin in Rome, and such must inevitably have been the issue, had not an extraneous influence arisen in Bernard of Clairvaux, to whom Europe learned to look up as the beater down of heresies, theological and political. He had been a pupil of William of Champeaux, the vanquished rival of Abelard, and Abelard he hated with a religious and personal hate. He was a wonder-worker. He excommunicated the flies which infested a church--they all fell down dead and were swept out by the basketful. He has been described as "the mellifluous doctor, whose works are not scientific, but full of unction." He could not tolerate the principle at the basis of Abelard's philosophy--the assertion of the supremacy of reason. Of Arnold of Brescia--who carried that principle to its political consequences, and declared that the riches and power of the clergy were inconsistent with their profession--he was the accuser and punisher. [Sidenote: Its failure.] Bernard preached a new crusade, authenticating his power by miracles, affirmed to be not inferior to those of our Saviour; promising to him who should slay an unbeliever happiness in this life and Paradise in the life to come. This second crusade was conducted by kings, and included fanatic ladies, dressed in the armour of men; but it ended in ruin.