 Rawls affirms the objectivity and “correctness” of the principles of justice, and he says they are the “most reasonable” principles. But he does not say at any point that the principles of justice are “true.” He does however say that judgments based upon the principles of justice are true, and this applies to both particular judgments and to the moral rules of justice that are required by the principles of justice (CP 355). These claims are implicit in Rawls’s Kantian constructivism. (It is noteworthy that Kant himself did not say that the categorical imperative is true; instead he said it is “universally valid.”) In general, constructivism in moral philosophy is a view about the possibility of the correctness of moral principles and judgment. “Realism” says that the correctness of moral judgments resides in their truth, and that truth of most fundamental moral principles consists in their corresponding to a moral order (of moral facts or objects) that is antecedent to reason and to principles of practical reasoning. Objectivity of moral judgment is then defined by realists as judgment made from a perspective of reasoning that is likely to lead to discernment of these antecedent objects of truth. In “Kantian Constructivism in Moral Theory” (Lecture III, CP 340ff.), Rawls discusses a version of realism found in Henry Sidgwick and G.E. Moore, “rational intuitionism,” which he contrasts with moral constructivism. 