1. Richard Epstein has argued that we ought to inflate Hart's "natural necessity" to a more robust, yet libertarian, notion of human welfare. Richard Epstein;20 Ratio Juris,2005
2. This point 29 was made in Fuller's final reply to the criticisms of the proceduralist natural law. Some argue that Fuller was not a natural law theorist, but this is incorrect. I have argued previously that Fuller is best understood as a proponent of the style of natural law that I believe resonates with Perelman's rhetorical philosophy of argumentation;Lon L Fuller;The Morality of Law,1969
3. Law in Flux: Philosophical Hermeneutics, Legal Argumentation, and the Natural Law Tradition;Iii Mootz;11 Yale J. of Law & the Humanities,1999