When Christ at a symbolic moment was establishing His great society, He chose for its cornerstone neither the brilliant Paul nor the mystic John, but a shuffler, a snob, a coward – in a word, a man. And upon this rock, He has built His Church, and the gates of Hell have not prevailed against it. All the empires and the kingdoms have failed, because of this inherent and continual weakness, that they were founded by strong men and upon strong men. But this one thing, the historic Christian Church, was founded on a weak man, and for that reason it is indestructible. For no chain is stronger than its weakest link.

The Marvelous Power Of The Cross | Pope Leo The Great
Our understanding, which is enlightened by the Spirit of truth, should receive with purity and freedom of heart the glory of the cross as it shines in heaven and on earth. It should see with inner vision the meaning of the Lord's words when he spoke of the imminence...