It is the quietest and meekest people who are often capable of the most sudden and unexpected violences for the reason that when their control does snap, it goes entirely. (Hercule Poirot)
Man is not only a contributory creature, but a total creature; he does not only make one, but he is all; he is not a piece of the world, but the world itself, and next to the glory of God, the reason why there is a world.