On the Catholic Priesthood
St. Augustin admonishes us :"When, either through the neglect of prelates, or by some necessity, or through unknown causes, we find that wicked persons are in the Church, whom we cannot correct or restrain by ecclesiastical discipline, let not the impious and destructive presumption enter our heart that we should imagine ourselves obliged to separate from them."
All scandals and excesses should be put to the charge of human frailty and perversity. The authority of the Church rests on the commission given by Christ, which is unqualified and perpetual."
Source: A Vindication of the Catholic Church in a series of letters addressed to the Rt. Rev. John Henry Hopkins, Protestant Episcopal Bishop of Vermont by Archbishop of Baltimore Francis Patrick Kenrick. 1855