Is it the task of legal semiotics or the legal philosophers to define legal semiotics? For the philosopher of law, the question recalls the distinction between philosophers’ philosophy of law and legal scholars’ philosophy of law. The thesis that the paper argues is that a semiotic legal perspective can also be sought from the analysis of anthropological knowledge on the origin of the social bond and society, implying a social and institutional theory of the mind. In the first paragraph, the (...) search for a different kind of rationality emerges from a semiotician, Jürgen Trabant, who analyses semiotically the thought of a rhetorician and philosopher of law, Giambattista Vico. In the second paragraph, the anthropological notion of social bond emerges from the debate on the relationship between the idea of the gift and that of exchange. In the third paragraph, the analysis of the legal notion of thirdness recognizes the central role of myth and fiction in the configuration of the civil world and sign, returning to Vico’s critical view of the philosophy of language as an institution of society. (shrink)