Pius IX, 1846-1878

author in many matters does not think correctly, and that his doctrine is far from Catholic truth.

1668. And this, especially in a twofold direction; the first, indeed, because the author attributes such powers to human reason which are not at all appropriate to reason itself; and the second, because he grants to the same reason such liberty of judging all things, and of always venturing anything, that the rights of the Church itself, its office and authority are completely taken away.

1669. For the author teaches especially that philosophy, if a right notion of it is held, cannot only perceive and understand those Christian dogmas which natural reason has in common with faith (as, for instance, a common object of perception), but also those which particularly and properly affect Christian religion and faith, namely, the supernatural end of man, and all that is related to it; and also, that the most holy mystery of the Incarnation of the Lord belongs to the province of human reasoning and philosophy; and that reason, when this object is presented to it, can by its own proper principles, arrive at those (dogmas) with understanding. But, although the author makes some distinction between these (natural) dogmas and those (Christian), and assigns these latter with less right to reason, nevertheless, he clearly and openly teaches that these (Christian) dogmas also are contained among those which constitute the true and proper matter of science or philosophy. Therefore, according to the teaching of the same author, it can and should be definitely concluded that, even in the deepest mysteries of divine wisdom and goodness, nay, even of Its free will, granted that the object of revelation be posited, reason can of itself, no longer on the principle of divine authority, but on its own natural principles and strength, reach understanding or certitude. How "false" and "erroneous" this teaching of the author is, there is no one, even though lightly imbued with the rudiments of Christian doctrine, who does not see immediately and clearly understand.

1670. For, if these worshipers of philosophy were protecting the true and sole principles and rights of reason and philosophic study, they should certainly be honored with merited praise. Indeed, true and sound philosophy has its own most noble position, since it is the characteristic of such philosophy to search diligently into truth, and to cultivate and illustrate rightly and carefully human reason, darkened as it is by the guilt of the first man, but by no means extinct; and to perceive, to understand well, to advance the object of its cognition and many truths; and to demonstrate, vindicate, and defend, by arguments sought from its own principles, many of those truths, such as the existence, nature, attributes of God which faith also proposes for our belief; and, in this way, to build a road to those dogmas more correctly held by faith, and