Miracles - C. S. Lewis [16]
5
A FURTHER DIFFICULTY IN NATURALISM
Even as rigorous a determinist as Karl Marx, who at times described the social behaviour of the bourgeoisie in terms which suggested a problem in social physics, could subject it at other times to a withering scorn which only the presupposition of moral responsibility could justify.
R. NIEBUHR, An Interpretation of
Christian Ethics, chap. iii.
Some people regard logical thinking as the deadest and driest of our activities and may therefore be repelled by the privileged position I gave it in the last chapter. But logical thinking—Reasoning—had to be the pivot of the argument because, of all the claims which the human mind puts forward, the claim of Reasoning to be valid is the only one which the Naturalist cannot deny without (philosophically speaking) cutting his own throat. You cannot, as we saw, prove that there are no proofs. But you can if you wish regard all human ideals as illusions and all human loves as biological by-products. That is, you can do so without running into flat self-contradiction and nonsense. Whether you can do so without extreme unplausibility—without accepting a picture of things which no one really believes—is another matter.
Besides reasoning about matters of fact, men also make moral judgements—‘I ought to do this’—‘I ought not to do that’—‘This is good’—‘That is evil.’ Two views have been held about moral judgements. Some people think that when we make them we are not using our Reason, but are employing some different power. Other people think that we make them by our Reason. I myself hold this second view. That is, I believe that the primary moral principles on which all others depend are rationally perceived. We ‘just see’ that there is no reason why my neighbour’s happiness should be sacrificed to my own, as we ‘just see’ that things which are equal to the same thing are equal to one another. If we cannot prove either axiom, that is not because they are irrational but because they are self-evident and all proofs depend on them. Their intrinsic reasonableness shines by its own light. It is because all morality is based on such self-evident principles that we say to a man, when we would recall him to right conduct, ‘Be reasonable.’
But this is by the way. For our present purpose it does not matter which of these two views you adopt. The important point is to notice that moral judgements raise the same sort of difficulty for Naturalism as any other thoughts. We always assume in discussions about morality, as in all other discussions, that the other man’s views are worthless if they can be fully accounted for by some non-moral and non-rational cause. When two men differ about good and evil we soon hear this principle being brought into play. ‘He believes in the sanctity of property because he’s a millionaire’—‘He believes in Pacifism because he’s a coward’—‘He approves of corporal punishment because he’s a sadist.’ Such taunts may often be untrue: but the mere fact that they are made