We must drop the idea that change comes slowly. It does ordinarily - in part because we think it does. Today changes must come fast; and we must adjust our mental habits, so that we can accept comfortably the idea of stopping one thing and beginning another overnight. We must discard the idea that past routine, past ways of doing things, are probably the best ways. On the contrary, we must assume that there is probably a better way to do almost everything. We must stop assuming that a thing which has never been done before probably cannot be done at all.