Besides their skepticism about universal reason and universal morality, the Frankfurt Schools of Critical Systems Theory and Critical Theory share basic assumptions: (1) the thinking in societal-systemic, institutional concepts, which transcend simple reciprocal relations by dint of their complexity; (2) the assumption that society is based on fundamental paradoxes, antagonisms, antinomies; (3) the strategy to conceptualize justice as a contingent and transcendental formula; (4) the form of immanent (and not morality-based, external) critique as an attitude of transcendence; (5) the aim (...) of societal (and not only political) emancipation in an ‘association of free individuals’ (Marx). The article focuses on those parallels and aims to conceptualize a critical turn-around of autopoietic systems theory. (shrink)