“[The Church] is called Catholic, then, because it extends over the whole world, from end to end of the earth, and because it teaches universally and infallibly each and every doctrine which must come to the knowledge of men concerning things visible and invisible…because it universally treats and heals every...

“So it falls out that in this world, in evil days like these, the Church walks onward like a wayfarer stricken by the world’s hostility, but comforted by the mercy of God. Nor does this state of affairs date only from the days of Christ’s and His Apostles’ presence on...