Kantians are increasingly deserting the universal law formula in favor of the humanity formula. The former, they argue, is open to various decisive objections; the two are not equivalent; and it is only by appealing to the humanity formula that Kant can reliably generate substantive implications from his theory of an acceptable sort. These assessments of the universal law formula, which clash starkly with Kant's own assessment of it, are based on various widely accepted interpretative assumptions. These assumptions, it is (...) argued in this article, depend on misleading translations of key terms; selective attention to Kant's concrete examples; not taking seriously Kant's theoretical claims about the relations among his various ideas; and a failure to take into account Kant's idiosyncratic definitions of key concepts. The article seeks to right these interpretative wrongs, and finds that the universal law formula is not open to many of the standard objections. (shrink)

Writers like Christine Korsgaard and Allen Wood understand Kant's idea of rational nature as an end in itself as a commitment to a substantive value. This makes it hard for them to explain the supposed equivalence between the universal law and humanity formulations of the categorical imperative, since the former does not appear to assert any substantive value. Nor is it easy for defenders of value-based readings to explain Kant's claim that the law-giving nature of practical reason makes all beings (...) with practical reason regard the idea of a rational nature as an end in itself. This article seeks to replace these value-based readings with a reading of the idea of rational nature as an end that fits better with the overall argument of the Groundwork. (shrink)

According to Korsgaard’s very influential interpretation, moral normativity follows from a commonly accepted conception of rational agency, namely, the capacity to set ends and pursue them or humanity. The paper argues that humanity is not the source of moral normativity. Taking the exercise of your freedom in pursuit of your ends to be justified commits you to acknowledging the equal claim of others to see themselves as justified in the pursuit of their ends. This entails the equal restriction of the (...) freedom of each to ensure maximal freedom for all. But this is precisely what Kant thinks of as the state of right. In contrast, the paper claims that the second formula of the categorical imperative commands making the humanity of rational beings who are assumed to possess the capacity to act morally or personality, into our end, precisely because they are assumed to possess this distinct rational capacity. (shrink)

It is commonly thought that on Kant’s view of action, ‘everyone always acts on maxims.’ Call this the ‘descriptive reading.’ This reading faces two important problems: first, the idea that people always act on maxims offends against common sense: it clashes with our ordinary ideas about human agency. Second, there are various passages in which Kant says that it is ‘rare’ and ‘admirable’ to firmly adhere to a set of basic principles that we adopt for ourselves. This article offers an (...) alternative: the ‘normative reading.’ On this reading, it is a normative ideal to adopt and act on maxims: it is one of the things Kant thinks we would do if our reason were fully in control of our decision-making. (shrink)