Kant famously insists that free will is a condition of morality. The difficulty of providing a demonstration of freedom has left him vulnerable to devastating criticism: critics charge that Kant's post-Groundwork justification of morality amounts to a dogmatic assertion of morality's authority. My paper rebuts this objection, showing that Kant offers a cogent demonstration of freedom. My central claim is that the demonstration must be understood in practical rather than theoretical terms. A practical demonstration of x works by bringing x (...) into existence, and what the demonstration of freedom brings into existence is a moral will, a will regulated by the moral law and capable of acting in accordance with it. Since to act morally is to act freely, bringing a moral will into existence actualizes our capacity for freedom and demonstrates that we possess it. To confirm the viability of such a demonstration, Kant must establish that agents can regulate their wills by practical principles, and that practical judgments are efficacious of themselves (i.e., that non-Humean motivational internalism is true). Kant, I argue, is successful on both counts. (shrink)

One usual understanding of Kant's moral theory identifies agents as solitary individuals who reflect on the moral quality of actions ‘in the loneliness of their souls’. Their reflection is autonomous, independent and ‘monological’, with the result that ‘by presupposing autonomy’ Kant ‘expels moral action from the very domain of morality itself’. Instead of an ‘interplay of an intersubjectivity’ in which moral issues arise and are resolved, the autonomous solitary individual seems to derive rules for action from a categorical imperative. Yet (...) this imperative itself is only a statement of the formal character of reason independent of particular contexts, and so cannot clearly guide actual actions and choices. From another direction, Iris Murdoch has maintained that, ‘confronted even with Christ’, the Kantian moral agent ‘turns away to consider the judgment of his own conscience and to hear the voice of his own reason’. He insists on being ‘free, independent, lonely, powerful, rational, responsible, brave, [and] heroic'; and, Murdoch contends, the proper name of this individual ‘is Milton's Lucifer’. This moral agent is individualistic to the point of being damnably isolated. (shrink)