What is C.S. Lewis’s 1955 book about the moral law called?

C.S. Lewis’s 1955 book about the moral law is called The Abolition of Man. It developed from three lectures Lewis delivered at the University of Durham in 1943.

The book argues that moral judgments are not merely expressions of personal emotion or social preference. Lewis presents a cross-cultural moral order, which he calls the Tao, as a foundation for education and human conduct.

Lewis was responding especially to trends in modern education that he believed reduced moral statements to subjective reactions. He warned that attempts to master nature could ultimately become attempts by some people to control other people.

The title does not mean that Lewis advocated eliminating humanity. It refers to the possibility that rejecting objective values could produce people shaped by external scientific or political power rather than by a stable account of human nature.