The author of this paper explores a central strand in the complex relationship between Peirce and Kant. He argues, against Kant (especially as reconstructed by Christine Korsgaard), that the practical identity of the self-critical agent who undertakes a Critic of reason (as Peirce insisted upon translating this expression) needs to be conceived in substantive, not purely formal, terms. Thus, insofar as there is a reflexive turn in Peirce, it is quite far from the transcendental turn taken by Immanuel Kant. The (...) identity of the being devoted to redefining the bounds of reason (for the drawing of such bounds is always a historically situated and motivated undertaking) is not that of a disembodied, rational will giving laws to itself. Nor is it that of a being whose passions and especially sentiments are heteronomous determinations of the deliberative agency in question. Rather the identity of this being is that of a somatic, social, and historical agent whose very autonomy not only traces its origin to heteronomy but also ineluctably involves an identification with what, time and again, emerges as other than this agent. A strong claim is made regarding human identity being practical identity (practical identity being understood here as the singular shape acquired by a human being in the complex course of its practical involvements, its participation in the array of practices in and through which such a being carries out its life). An equally strong claim is made regarding the upshot of Peirce's decisive movement beyond Kant's transcendental project: this movement unquestionably drives toward a compelling account of human agency. (shrink)

During the 1760s and 1770s, Kant entertained a naturalistic approach to ethics based on the supposed psychological fact of a human love for freedom. During the critical period, especially in the Groundwork for the Metaphysics of Morals, Kant clearly rejected such an approach. But his attempt at a metaphysical foundation for ethics in section III of the Groundwork was equally clearly a failure. Kant recognized this in his appeal to the "fact of reason" argument in the Critique of Practical Reason, (...) but thereby gave up on any attempt to ground the fundamental principle of morality at all. So it is of interest to see how far we might now proceed along the lines of his original naturalistic approach. (shrink)