In an epoch of ‘liquid modernity’, normativity assumes unforeseeable forms. Neither the theories of normative integration nor post-normative approaches can explain its contradiction: binding normativity still prevails, but its validity is limited in space and time. Only a ‘transnormative approach’ can therefore address the issue. An ideal-typical reconstruction of sociological theories as a contrast between normative and transnormative approaches allows us to appreciate the decisive contribution Simmel makes to the understanding of complex societies. A precondition is, however, to explain the (...) epistemological efforts he made to overcome axiomatic assumptions about human sociability that unconsciously guide sociological thought. To this end, Simmel develops two different nuclei of sociological and philosophical theory: sociological epistemology and philosophical anthropology of complex societies. These are analysed as a process of relationship-building in a transnormative sense. To interact, individuals are required to comply with expectations of the other. Therefore living in society always presupposes a dialectic between the public and the private person. Enquiring into this issue allows Simmel to ground a non-normative theory of social integration. As long as individuals realize their potential through social interaction, this process permits society building even though there are no shared value orientations. (shrink)