An updated and extended second edition supporting the findings of its well-known predecessor which claimed that courts employ common-sense notions of causation in determining legal responsibility.

This important collection of essays includes Professor Hart's first defense of legal positivism; his discussion of the distinctive teaching of American and Scandinavian jurisprudence; an examination of theories of basic human rights and the notion of "social solidarity," and essays on Jhering, Kelsen, Holmes, and Lon Fuller.