"When Christ at a symbolic moment was establishing His great society, He chose for its corner-stone 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 upon a weak man, and for that reason it is indestructible. For no chain is stronger than its weakest link."
Hat-tip- Chesterton Day by Day