This is scarce to be wondered at if we consider the material from which their inmates were drawn. It is the severest reproach upon their discipline to find so enthusiastic an admirer of the strict Cistercian rule as Cæsarius of Heisterbach asserting as an admitted fact that boys bred in monasteries made bad monks and frequently became apostates. As for those who took the vows in advanced life, he enumerates their motives as sickness, poverty, captivity, infamy, mortal danger, dread of hell or desire of heaven, among which the predominance of selfish impulses was not likely to secure a desirable class of devotees. In fact, he assures us that criminals frequently escaped punishment by agreeing to enter monasteries, which thus in some sort became penal settlements, or prisons, and he illustrates this with the case of a robber baron in 1209, condemned to death for his crimes by the Count Palatine Henry, who was rescued by Daniel, Abbot of Schonau, on condition of his entering the Cistercian order. Scarcely less desirable inmates were those who, moved by a sudden revulsion of conscience, would turn from a life stained with crime and violence to bury themselves in the cloister while yet in the full vigor of strength and with passions unexhausted, finding, perhaps, at last their fierce and untamed natures unfitted to bear the unaccustomed restraint. The chronicles are full of illustrations of this passionate religious energy in natures wholly untrained in self-control, and they explain much that otherwise would seem incredible to the calmer and more self-contained world of to-day. For instance when, in 1071, Arnoul III. of Flanders, fell at Montcassel in defending his dominions against his uncle, Robert the Frisian, Gerbald, the knight who slew his suzerain, was seized with remorse for his act and wandered to Rome, where he presented himself before Gregory VII. with the request that his hands be stricken off as a fitting penance. Gregory assented, and ordered his chief cook to do the service, secretly instructing him that if, when the axe was raised, Gerbald shrank or wavered, he was to strike without mercy, but if the penitent was firm, then he was to announce that he was spared. Gerbald did not blench, and the pope declared to him that the hands thus preserved were no longer his but the Lord's, and sent him to Cluny to be placed under the charge of the holy Abbot Hugh, where the fierce warrior peacefully ended his days. If, as sometimes happened, these untamable souls chafed under the irrevocable vow, after the fit of repentance had passed, they offered ample material for internal sedition and external violence.[26]