On the Necessity of the Interconnection between Law and Morality*

Abstract. By taking issue with Robert Alexy's claim to correctness, I attempt to cast light on the nature of the necessity that pertains to the claim. With respect to it, I argue that it should be understood as deriving from the metaphysical requirements for normative knowledge in general. These requirements are shown to include a general norm of autonomy which is a priori and necessary, and comprises a minimal morality. The line of reasoning is compatible with discourse theory, but does not presuppose it; therefore more far‐reaching conclusions can be drawn.