Can there be a theory of law? -- Two views of the nature of the theory of law : a partial comparison -- On the nature of law -- The problem of authority : revisiting the service conception -- About morality and the nature of law -- Incorporation by law -- Reasoning with rules -- Why interpret? -- Interpretation without retrieval -- Intention in interpretation -- Interpretation : pluralism and innovation -- On the authority and interpretation of constitutions : some preliminaries -- Postema on law's autonomy and public practical reasons : a critical comment.