Abstract
This paper suggests that libertarian and (related) contractarian ideas would be less vulnerable to certain forms of criticism if they would more carefully disentangle their legal and moral standards for the assessment of institutions from empirical, methodological, and epistemological assumptions about individualism and non-cognitivism. Holding apart several meanings of individualism different issues can be treated separately. It will be shown that the justification of libertarian norms raises some problems which are not too easily solved within a non-cognitivist approach. No attempt to solve them is made subsequently but how far in principle the ‘argumentation possibility frontier’ might be shifted out for that purpose is outlined. In this respect the paper might be regarded as a companion to Viktor Vanberg’s brillant reconstruction of contractarian liberalism in this issue of Analyse & Kritik (pp. 113–149).