 The most influential criticisms of legal positivism all flow, in one way or another, from the suspicion that it fails to give morality its due. A theory that insists on the facticity of law seems to contribute little to our understanding that law has important functions in making human life go well, that the rule of law is a prized ideal, and that the language and practice of law is highly moralized. Accordingly, positivism’s critics maintain that the most important features of law are not to be found in its source-based character, but in law’s capacity to advance the common good, to secure human rights, or to govern with integrity.