"natural law" . "natural law-natural rights branch of libertarian thought" . "Deontological libertarianism" . . . . "natural-rights libertarians" . "natural rights" . . . "Natural-rights libertarianism" . . . "natural-rights" . . "deontology" . "natural-rights libertarianism" . . "rights-based" . . . . "Natural-rights libertarianism" . . "deontological" .