“Science has a simple faith, which transcends utility. Nearly all men of science, all men of learning for that matter, and men of simple ways too, have it in some form and in some degree. It isthe faith that it is the privilegeof man to learn to understand, and that this is his mission. If we abandon that mission under stress we shall abandonit forever, for stress will not cease. Knowledge for the sakeof understanding, not merely to prevail, that is the essence of our being. None can defineits limits, or set its ultimate boundaries.”