The very particular nature of the pope’s Ordinary Infallible Magisterium was quite clear until Vatican I. While this Council was in session, La Civiltà Cattolica, which published (and still publishes) under the direct control of the Holy See, replied in these words to Fr. Gratry, who had criticized Pope Paul IV’s Bull Cum ex Apostolus:
"We ask Fr. Gratry, in all serenity, whether he believes that the Bull of Paul IV is an isolated act, so to speak, or an act that is comparable to others of the same kind in the series of Roman popes. If he replies that it is an isolated act, his argument proves nothing, for he himself affirms that the Bull of Paul IV contains no dogmatic definition. If he replies, as he must, that this Bull is, in substance, conformable to countless other similar acts of the Holy See, his argument says far more than he would wish. In other words, he is saying that a long succession of Roman popes have made public and solemn acts of immorality and injustice against the principles of human reason, of impiety towards God, and of apostasy against the Gospel." (vol. X, series VII, 1870, p.54)