This paper takes the dichotomy between “exclusive” and “inclusive” positivism and applies it by analogy to natural-law theories. With John Finnis, and with Beyleved and Brownsword, we have examples of “exclusive natural-law theory,” on which approach the law is valid only if its content satisfies a normative monological moral theory. The discourse theories of Alexy and Habermas are seen instead as “inclusive natural-law theories,” in which the positive law is a constitutive moment in that it identifies moral rules and specifies (...) their meaning. The article argues that inclusive theories of natural law are better suited to expressing an authentic “republican” attitude.*In the seed of the city of the just, a malignant seed is hidden, in its turn: the certainty and pride of being in the right. (Calvino 1997, 162). (shrink)