Kant’s ethics conceives of rational beings as autonomous–capable of legislating the moral law, and of motivating themselves to act out of respect for that law. Kant’s ethics also includes a notion of the highest good, the union of virtue with happiness proportional to, and consequent on, virtue. According to Kant, morality sets forth the highest good as an object of the totality of all things good as ends. Much about Kant’s conception of the highest good is controversial. This paper focuses (...) on the apparent conflict between Kant’s claim that we are autonomous, and passages in which he seems to suggest that we require belief in the possibility of the highest good to motivate moral action. I distinguish three distinct versions of these problematic claims that seem to be present in Kant’s texts: that the highest good serves as (1) a motivational supplement to respect for the moral law, (2) a fundamental spring of right action, and (3) a condition of the bindingness of moral requirements. I argue that the texts are better interpreted to yield alternatives to (2) and (3) that do not conflict with our autonomy. I also argue that, properly understood, (1) does not conflict with our autonomy. In arguing for the last claim, I explore Kant’s notion of radical evil and its implications for human agency and virtue. (shrink)

Kant emphasizes that moral philosophy must be divided into two parts, a metaphysics of morals, and an empirical application to individuals, which Kant calls 'moral anthropology'. But Kant gives humanity (die Menschheit) a prominent role even in the purely rational part of ethics – for example, one formulation of the categorical imperative is a demand to treat humanity as an end in itself. This paper argues that the only concepts of humanity suited to play such a role are the rational (...) idea of humanity, and the rational ideal derived from this idea, which Kant discusses in Critique of Practical Reason and other texts. (shrink)

Maclntyre's refurbishing of Aristotelian ethics aims to restore both intelligibility and rationality to moral discourse. In After Virtue he concentrates on showing how intelligible action requires that lives be led within institutional and cultural traditions. But he does not offer a developed account of practical reason which could provide grounds for seeking some rather than other intelligible continuations of lives and traditions. Despite Maclntyre's criticisms of Kant's ethics, a Kantian account of practical reasoning may complement his account of intelligibility. An (...) appropriate interpretation of Kantian ethics is outlined, which escapes Maclntyre's criticisms, allows both for the universal character of basic moral principles and for the historical variability of intelligible action, and which makes moral worth or virtue the centre of the moral life. The refurbishing of Aristotelian ethics may be achieved by a Kantian completion. (shrink)

Kant’s Groundwork is the most read and surely the most exasperating of his works on practical philosophy. Both its structure and its arguments remain obscure and controversial. A quick list of unsettled questions reminds one how much is in doubt. The list might include the following: Why does Kant shift the framework of his discussion three times in a short work? Does he establish that there is a supreme principle of morality? Does he show that the Categorical Imperative is that (...) supreme principle? Does he show that human beings are free agents for whom such principles of morality are important? What is the relationship between the various apparently distinct formulations of the Categorical Imperative? To what extent are any of them action-guiding? (shrink)