 Among other advantages, moral constructivism relieves moral theory of the burden of having to account for the correctness of moral judgments in terms of their correspondence to a mysterious domain of moral facts (natural or non-natural) that must exist prior to practical reasoning. Constructivism also enables Rawls to provide an account of the objectivity of moral judgment and correctness of moral principles that is consistent with a Kantian idea of autonomy, In setting forth in detail the manner in which the principles of justice are justified on the basis of certain conceptions and principles that originate in practical reasoning itself, Rawls sees himself as having carried through with the Kantian aspiration of showing how moral principles of justice are the result of “reason giving principles to itself, out of its own resources.” 