What is the title of C.S. Lewis’s 1943 book arguing against moral subjectivism?

The Abolition of Man is C.S. Lewis’s 1943 book arguing against moral subjectivism. It developed from three lectures delivered at Durham University in February 1943 and examines education, value judgments, and the consequences of rejecting objective moral standards.

Lewis uses the term Tao for a broad shared order of basic human values, drawing examples from several civilizations and religious traditions. He argues that moral education should train the emotions to respond appropriately to genuine goods, rather than treating all value judgments as merely personal preferences. His criticism targets a form of modern educational theory that, in his view, separates reason from moral formation.

The final chapter warns that technological power over nature can become power exercised by some people over other people. The title does not describe a literal extinction of humanity. Instead, it refers to the possibility that people may be reduced by conditioning, technique, or ideology until human judgment and moral agency are weakened. The book is often read alongside Lewis’s later work That Hideous Strength, which dramatizes related concerns.