The author's thesis is that there is a conceptually necessary connection between law and morality which means legal positivism must fail as a comprehensive theory. The substantiation of this thesis takes place within a conceptual framework which shows that there are at least 64 theses to be distinguished, concerning the relationship of law and morality. The basis for the author's argument in favour of a necessary connection, is formed by the thesis that individual legal norms and decisions as well as (...) whole legal systems necessarily make a claim to correctness. The explication of this claim within the frame of discourse theory shows that the law has a conceptually necessary, ideal dimension, which connects law with a procedural, universalistic morality. (shrink)