Mere Christianity - C. S. Lewis [10]
I conclude then, that though the difference between people’s ideas of Decent Behaviour often make you suspect that there is no real natural Law of Behaviour at all, yet the things we are bound to think about these differences really prove just the opposite. But one word before I end. I have met people who exaggerate the differences, because they have not distinguished between differences of morality and differences of belief about facts. For example, one man said to me, ‘Three hundred years ago people in England were putting witches to death. Was that what you call the Rule of Human Nature or Right Conduct?’ But surely the reason we do not execute witches is that we do not believe there are such things. If we did—if we really thought that there were people going about who had sold themselves to the devil and received supernatural powers from him in return and were using these powers to kill their neighbours or drive them mad or bring bad weather—surely we would all agree that if anyone deserved the death penalty, then these filthy quislings did? There is no difference of moral principle here: the difference is simply about matter of fact. It may be a great advance in knowledge not to believe in witches: there is no moral advance in not executing them when you do not think they are there. You would not call a man humane for ceasing to set mousetraps if he did so because he believed there were no mice in the house.
3
THE REALITY OF THE LAW
I now go back to what I said at the end of the first chapter, that there were two odd things about the human race. First, that they were haunted by the idea of a sort of behaviour they ought to practise, what you might call fair play, or decency, or morality, or the Law of Nature. Second, that they did not in fact do so. Now some of you may wonder why I called this odd. It may seem to you the most natural thing in the world. In particular, you may have thought I was rather hard on the human race. After all, you may say, what I call breaking the Law of Right and Wrong or of Nature, only means that people are not perfect. And why on earth should I expect them to be? That would be a good answer if what I was trying to do was to fix the exact amount of blame which is due to us for not behaving as we expect others to behave. But that is not my job at all. I am not concerned at present with blame; I am trying to find out truth. And from that point of view the very idea of something being imperfect, of its not being what it ought to be, has certain consequences.
If you take a thing like a stone or a tree, it is what it is and there seems no sense in saying it ought to have been otherwise. Of course you may say a stone is ‘the wrong shape’ if you want to use it for a rockery, or that a tree is a bad tree because it does not give you as much shade as you expected. But all you mean is that the stone or the tree does not happen to be convenient for some purpose of your own. You are not, except as a joke, blaming them for that. You really know, that, given the weather and the soil, the tree could not have been any different. What we, from our point of view, call a ‘bad’ tree is obeying the laws of its nature just as much as a ‘good’ one.
Now have you noticed what follows? It follows that what we usually call the laws of nature—the way weather works on a tree for example—may not really be laws in the strict sense, but only in a manner of speaking. When you say that falling stones always obey the law of gravitation, is not this much the same as saying that the law only means ‘what stones always do’? You do not really think that when a stone is let go, it suddenly remembers