Ética del discurso y realismo moral. El debate entre J. Habermas y C. Lafont

Abstract

This paper analyses the recent debate between J. Habermas and C. Lafont on discourse ethics. The aim is to show that Lafont’s proposal of a realist interpretation of discourse ethics must face several problems which are difficult to resolve from within the theoretical frame of discourse ethics. First of all, the paper sets out how Lafont’s position extends to the field of practical reason some important objections against Habermas’s consensus theory of truth. Subsequently Lafont’s arguments in support of moral realism are criticised, and the paper concludes with an analysis of the difference between rational agreements and compromises of interests from a procedural point of view.