"In general, however, the heads of Catholic institutions do not prohibit the teaching of heresies not because they have definitely lost their faith, but because they yield to public opinion and to fashion. They fear to be called 'reactionaries.' They shudder at the thought of violating this allegedly holy academic freedom. Of these St. Augustine says: 'Who is the hireling who, seeing the approach of the wolf, takes flight? He who seeks himself and does not seek what is of Jesus Christ; he who does not dare to frankly admonish the sinner (1 Tim. 5:20). See, someone has sinned, gravely sinned; he should be admonished, excluded from the Church. But, excluded from the Church, he will become its enemy and will try to ensnare it and harm it where he can. Now the hireling, the one who seeks himself and not what is of Jesus Christ, will be silent and will not give any admonition, in order not to lose what he seeks, namely the advantages of personal friendship, and in order to avoid the unpleasantness, worry and personal enmity. The wolf at that moment takes hold of the sheep to throttle them...You are silent O hireling, and do not admonish...Your silence is your flight. You are silent, you are afraid. Fear is the flight of the soul. (St. Augustine, Tractatus in Joannem, XLVI, 7-8)'."
-Dietrich von Hildebrand