Damian to Pope Nicholas II in 1059:
“What worse thing can one do than to spare lustful bishops when he has the power to correct them?”
"Clearly, just as those who punish faults are worthy of blessing, so those who coddle sinners are subject to a curse, as the prophet says: 'Cursed be he that withholdeth his sword from blood.' (Jer. 49:10) Indeed, he who withholds his sword from blood is he who restrains himself from imposing the punishment of a proper sentence against evildoers. 'Those who fail to correct are themselves guilty of the act.' If, therefore, Eli, only because of two sons whom he did not correct with a proper punishment, perished together with them and with such a great multitude of men, of what sentence do we think them to be worthy who preside in the palaces of the Church and in the seats of judgment, and who are silent in the face of the known offenses of depraved men?"