That’s right. Pope Pius XII was certainly right. I think this part is especially relevant.
"5. If anyone examines the state of affairs outside the Christian fold, he will easily discover the principle trends that not a few learned men are following. Some imprudently and indiscreetly hold that evolution, which has not been fully proved even in the domain of natural sciences, explains the origin of all things, and audaciously support the monistic and pantheistic opinion that the world is in continual evolution. Communists gladly subscribe to this opinion so that, when the souls of men have been deprived of every idea of a personal God, they may the more efficaciously defend and propagate their dialectical materialism.
"6. Such fictitious tenets of evolution which repudiate all that is absolute, firm and immutable, have paved the way for the new erroneous philosophy which, rivaling idealism, immanentism and pragmatism, has assumed the name of existentialism, since it concerns itself only with existence of individual things and neglects all consideration of their immutable essences.
"7. There is also a certain historicism, which attributing value only to the events of man’s life, overthrows the foundation of all truth and absolute law, both on the level of philosophical speculations and especially to Christian dogmas.
"8. In all this confusion of opinion it is some consolation to Us to see former adherents of rationalism today frequently desiring to return to the fountain of divinely communicated truth, and to acknowledge and profess the word of God as contained in Sacred Scripture as the foundation of religious teaching. But at the same time it is a matter of regret that not a few of these, the more firmly they accept the word of God, so much the more do they diminish the value of human reason, and the more they exalt the authority of God the Revealer, the more severely do they spurn the teaching office of the Church, which has been instituted by Christ, Our Lord, to preserve and interpret divine revelation. This attitude is not only plainly at variance with Holy Scripture, but is shown to be false by experience also. For often those who disagree with the true Church complain openly of their disagreement in matters of dogma and thus unwillingly bear witness to the necessity of a living Teaching Authority.
"9. Now Catholic theologians and philosophers, whose grave duty it is to defend natural and supernatural truth and instill it in the hearts of men, cannot afford to ignore or neglect these more or less erroneous opinions. Rather they must come to understand these same theories well, both because diseases are not properly treated unless they are rightly diagnosed, and because sometimes even in these false theories a certain amount of truth is contained, and, finally, because these theories provoke more subtle discussion and evaluation of philosophical and theological truths.
