Foundation of the Crisis of the Church
There is, believe it or not, a root to this crisis of the Church.
In order to find it, you have to dig past the documents of Vatican II ... as well as basically all the post-V2 fluff that tries to pass for doctrine and dig a little deeper.
Ultimately, we will arrive at ... wait for it ... pride.
You see, the problems of Vatican II etc didn't happen over night, it started with Luther and simply erupted at V2.
The liberals, modernists, et al simply thought (and think) that they have such a deep knowledge of Theology etc that they see where the Church made a mistake in dealing with the World. They prefer to make up their own perspective instead of accept reality, instead of submitting to the Church.
How was this pride manifested?
They disobeyed Pope Pius X by (amongst other things) disobeying the interdicts against teaching modernism, by reading modernist books that were on the index etc.
This continues today.
Archbishop Lefebvre said it - perhaps first - but looking at the Church today - truer words have not be said:
Two religions confront each other; we are in a dramatic situation and it is impossible to avoid a choice, but the choice is not between obedience and disobedience. What is suggested to us, what we are expressly invited to do, what we are persecuted for not doing, is to choose an appearance of obedience. But even the Holy Father cannot ask us to abandon our faith.
We therefore choose to keep it and we cannot be mistaken in clinging to what the Church has taught for two thousand years. The crisis is profound, cleverly organized and directed, and by this token one can truly believe that the master mind is not a man but Satan himself. For it is a master-stroke of Satan to get Catholics to disobey the whole of Tradition in the name of obedience. A typical example is furnished by the “aggiornamento” of the religious societies. By obedience, monks and nuns are made to disobey the laws and constitutions of their founders, which they swore to observe when they made their profession. Obedience in this case should have been a categorical refusal. Even legitimate authority cannot command a reprehensible and evil act. Nobody can oblige anyone to change his monastic vows into simple promises, just as nobody can make us become Protestants or modernists. St. Thomas Aquinas, to whom we must always refer, goes so far in the Summa Theologica as to ask whether the “fraternal correction” prescribed by Our Lord can be exercised towards our superiors. After having made all the appropriate distinctions he replies: “One can exercise fraternal correction towards superiors when it is a matter of faith.” (OpenLetterToConfusedCatholics/Chapter-18)