The world is a better place to live in because it contains human beings who will give up ease and security in order to do what they themselves think worth doing. They do the useless, brave, noble, divinely foolish, and the very wisest things that are done by Man. And what they prove to themselves and to others is that Man is no mere creature of his habits, no automaton in his routine, but that in the dust of which he is made there is also fire, lighted now and then by great winds from the sky.