Which C.S. Lewis book examines the idea of universal moral values?

The Abolition of Man examines the idea of universal moral values. C.S. Lewis published the book in 1943 after delivering three lectures at the University of Durham in 1943.

Lewis argues that moral education should recognize objective values rather than treating all judgments as merely subjective responses. He uses the term “Tao” for the traditional moral framework shared, in his view, by many cultures and religious traditions. The work is a philosophical critique of approaches to education that reduce moral statements to personal feelings.

The Abolition of Man is often confused with Lewis’s other nonfiction books. Miracles focuses on supernatural events and naturalism, while The Great Divorce is an allegorical narrative about heaven and hell. The Abolition of Man is shorter than many of Lewis’s major works but has had a substantial influence on discussions of education, ethics, and moral realism.