"In reality, moral rules are directions for running the human machine. Every moral rule is there to prevent a breakdown, or a strain, or a friction, in the running of that machine...When you are being taught how to use any machine, the instructor keeps on saying, 'No, don't do it like that,' because, of course, there are all sorts of things that look all right and seem to you the natural way of treating the machine, but do not really work." ~C.S. Lewis