***If he is outside the Church through no fault of his, that is, if he is in good faith, and if he has received Baptism, or at least has the implicit desire of Baptism; and if, moreover, he sincerely seeks the truth and does God's will as best he can such a man is indeed separated from the body of the Church, but is united to the soul of the Church and consequently is on the way of salvation.***
I find it interesting that there is no mention of the absolute requirement of having the Spirit of God living within one in order to be saved.
Paul was quite clear about this...
"Anyone who does not have the Spirit of Christ does not belong to him." - Rom 8
The about makes it sound like all one needs is good intentions. Good intentions will save no one.
"It is the Spirit who gives life; the flesh is of no avail."
Jonh 6:63
Correct, not in that quote. But that's only because what it means to be "united to the soul of the Church" has already been discussed in an earlier question of the Pius X Catechism. In short, "united to the soul of the Church" and "having the Spirit of God living within one" are functionally equivalent.
22 Q: In what does the Soul of the Church consist?A: The Soul of the Church consists in her internal and spiritual endowments, that is, faith, hope, charity, the gifts of grace and of the Holy Ghost, together with all the heavenly treasures which are hers through the merits of our Redeemer, Jesus Christ, and of the Saints.