9 We, strengthened by this faith, firmly established on this rock, realizing to the full all the heavy duties that the Primacy imposes on Us - but also all the vigor that comes to Us from the Divine Will - calmly wait until all the voices be scattered to the winds that now shout around Us proclaiming that the Church has gone beyond her time, that her doctrines are passed away for ever, that the day is at hand when she will be condemned either to accept the tenets of a godless science and civilization or to disappear from human society. Yet at the same time We cannot but remind all, great and small, as Pope St. Gregory did, of the absolute necessity of having recourse to this Church in order to have eternal salvation, to follow the right road of reason, to feed on the truth, to obtain peace and even happiness in this life.
Source: Iucunda Sane (Vatican.va)