The article deals with Habermas's intersubjective approach to critical social theory, focusing on his intersubjective accounts of truth, justice and democratic legitimacy. Distinguishing between stronger and weaker versions of an intersubjective account, it draws attention to Habermas's recent move from a strong intersubjective, constructivist, interpretation of truth to a weaker, non-constructivist, one. It then looks at his refusal to make a similar move in the case of justice, arguing that it is not well-founded, even from the point of view of (...) Habermas's overall concerns. It contends, in particular, that a strong intersubjective conception is not necessary in order to maintain the close link between normative validity and argumentation that plays an important role in Habermas's project of a critical social theory and concludes that the advantages of abandoning a strong intersubjective position outweigh the disadvantages. Consequently, it recommends extension of the weaker, non-constructivist, account that Habermas now proposes in the case of truth to justice as well. In the final section, it considers the implications of this recommendation for Habermas's conception of normative validity in the domain of law and politics. (shrink)