Law is the expression of public reason. I want to explicate and justify this assertion, which lies at the core of a normative theory of law. Primarily, I want to focus on the concept of public reason, showing what it is, relating it to private or individual reason, and finding its rationale in that relation. I shall then argue that public reason exhausts the normative space where law may be found. Appealing to public reason, I shall show that the authority (...) that law claims over the judgments and actions of citizens must ultimately be grounded in their own rationality. (shrink)