(Book: Mere Christianity by C. S. Lewis, chapter 2, “Some Objections”)
According to C. S. Lewis, “the foundation of all clear thinking about ourselves and the universe we live in” lies in assuming the existence of a natural Law of Morality. This isn’t just some arbitrary, human legislated regulation either. It’s a real Law of Nature that defines a real standard of Right and Wrong—a standard, moreover, that we all fall short of.
This week, Lewis looks at one last objection to that premise.
Other people wrote to me saying, ‘Isn’t what you call the Moral Law just a social convention, something that is put into us by education?’ I think there is a misunderstanding here… We all learned the multiplication table at school. A child who grew up alone on a desert island would not know it. But surely it does not follow that the multiplication table is simply a human convention, something human beings have made up for themselves and might have made different if they had liked?
He also compares it to which side of the road we drive on, which (unlike math) is a convention. In America, we drive on the right-hand side of the road; in England, on the left. There’s no natural law that says things have to be that way, and we might just as easily have decided on different conventions. So the question is, when we learn morality, are we learning about a pre-existing law, as in mathematics, or about a mere convention, as in driving?
Lewis, not surprisingly, favors the former, and he gives us two reasons.
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