Speaking about the errors of ecumenism, I’m reminded of the post-conciliar popes.
How far off we are here from Catholic teaching we have already seen in the decree of the Vatican Council. We shall see later how, with such theories, added to the other errors already mentioned, the way is opened wide for atheism. Here it is well to note at once that, given this doctrine of experience united with the other doctrine of symbolism, every religion, even that of paganism, must be held to be true. What is to prevent such experiences from being met within every religion? In fact that they are to be found is asserted by not a few. And with what right will Modernists deny the truth of an experience affirmed by a follower of Islam? With what right can they claim true experiences for Catholics alone? Indeed Modernists do not deny but actually admit, some confusedly, others in the most open manner, that all religions are true. That they cannot feel otherwise is clear. For on what ground, according to their theories, could falsity be predicated of any religion whatsoever? It must be certainly on one of these two: either on account of the falsity of the religious sentiment or on account of the falsity of the formula pronounced by the mind. Now the religious sentiment, although it may be more perfect or less perfect, is always one and the same; and the intellectual formula, in order to be true, has but to respond to the religious sentiment and to the Believer, whatever be the intellectual capacity of the latter. In the conflict between different religions, the most that Modernists can maintain is that the Catholic has more truth because it is more living and that it deserves with more reason the name of Christian because it corresponds more fully with the origins of Christianity. That these consequences flow from the premises will not seem unnatural to anybody. But what is amazing is that there are Catholics and priests who, We would fain believe, abhor such enormities yet act as if they fully approved of them. For they heap such praise and bestow such public honour on the teachers of these errors as to give rise to the belief that their admiration is not meant merely for the persons, who are perhaps not devoid of a certain merit, but rather for the errors which these persons openly profess and which they do all in their power to propagate.