A core feature of Kant’s Critical account of moral motivation is that pure reason can be practical by itself. I argue that Kant developed this view in the 1770s concerning the principium diiudicationis and principium executionis. These principles indicate the normative and performative aspects of moral motivation. I demonstrate that cognition of the normative principle effects the moral incentive. So, the hallmark of Kant’s Critical account of motivation was contained in his pre-Critical view. This interpretation resolves a controversy about Kant’s apparent eudaimonism in the first Critique and shows that he developed his account of moral autonomy in the 1770s.

We present evidence from a pre-registered experiment indicating that a philosophical argument – a type of rational appeal – can persuade people to make charitable donations. The rational appeal we used follows Singer’s “shallow pond” argument (1972), while incorporating an evolutionary debunking argument (Paxton, Ungar and Greene, 2012) against favoring nearby victims over distant ones. The effectiveness of this rational appeal did not differ significantly from that of a well-tested emotional appeal involving an image of a single child in need (Small, Loewenstein and Slovic, 2007). This is a surprising result, given evidence that emotions are the primary drivers of moral action, a view that has been very influential in the work of development organizations. We found no support for our hypothesis that combining our rational and emotional appeals would have a stronger effect than either appeal in isolation. However, our finding that both kinds of appeal can increase charitable donations is cause for optimism, especially concerning the potential efficacy of well-designed rational appeals. We consider the significance of these findings for moral psychology, ethics, and the work of organizations aiming to alleviate severe poverty.

Many commentators propose that Hume thinks that we are not or should not be motivated to perform naturally virtuous actions from moral sentiments. I take issue with this interpretation in this paper, arguing that Hume fully incorporates the moral sentiments into his understanding of how human beings act when it comes to the natural virtues and that he does not see the moral sentiments as a problematic kind of motivation that threatens or weakens the virtuous status of the action.

Internalism about normative reasons is the view that an agent’s normative reasons depend on her motivational constitution. On the assumption that there are reasons for emotion I argue that (a) externalism about reasons for emotion entails that all rational agents have reasons to be morally motivated and (b) internalism about reasons for emotion is implausible. If the arguments are sound we can conclude that all rational agents have reasons to be morally motivated. Resisting this conclusion requires either justifying internalism about reasons for emotion in a way hitherto unarticulated or giving up on reasons for emotion altogether.

There is a debate in the literature as to whether Kantian self-conceit is intrapsychic or interpersonal. I argue that self-conceit is both. I argue that, for Kant, self-conceit is fundamentally an illusion about authority, one’s own and any authority one stands in relation to. Self-conceit refuses to recognize the authority of the law. But the law “shows up” for us in two guises: one’s own reason and other persons. Thus, self-conceit refuses to recognize both guises of the law. Hence self-conceit is essentially double-sided, at once intrapsychic and interpersonal.

Regard for Reason in the Moral Mind argues that a careful examination of the scientific literature reveals a foundational role for reasoning in moral thought and action. Grounding moral psychology in reason then paves the way for a defense of moral knowledge and virtue against a variety of empirical challenges, such as debunking arguments and situationist critiques. The book attempts to provide a corrective to current trends in moral psychology, which celebrate emotion over reason and generate pessimism about the psychological mechanisms underlying commonsense morality. Ultimately, there is rationality in ethics not just despite but in virtue of the neurobiological and evolutionary materials that shape moral cognition and motivation.

In the third Critique, Kant claims that beauty is the symbol of morality and that the consideration of this relation is a duty. This paper declares Kant’s argument to be twofold: firstly, experience of beauty strengthens our moral feeling. Secondly, in judging the beautiful, we assume some indeterminate purpose underlying nature, based on which we can conceive of nature as cooperative with our practical pursuit. Hence, for the sake of moral cultivation and moral motivation, it is our duty to regard beauty as the special symbol of morality.

This paper gives an account of Kant’s concept of self-contentment (Selbstzufriedenheit), i.e. the satisfaction involved in the performance of moral action. This concept is vulnerable to an important objection: if moral action is satisfying, it might only ever be performed for the sake of this satisfaction. I explain Kant’s response to this objection and argue that it is superior to Francis Hutcheson’s response to a similar objection. I conclude by showing that two other notions of moral satisfaction in Kant’s moral philosophy, namely ‘sweet merit’ and the highest good, also avoid the objection.

Kant's ethics has long been bedevilled by a peculiar tension. While his practical philosophy describes the moral obligations incumbent on all free, rational beings, Kant also understands moral anthropology as addressing ‘helps and hindrances’ to our moral advancement. How are we to reconcile Kant's Critical account of a transcendentally free human will with his developmental view of anthropology, history and education as assisting in our collective progress towards moral ends? I argue that Kant in fact distinguishes between the objective determination of moral principles and subjective processes of moral acculturation developing human beings’ receptivity to the moral law. By differentiating subjective and objective dimensions of moral agency, I argue (1) that we better interpret the relationship between Kant's transcendental and anthropological accounts as a division of labour between principles of obligation and principles of volition, and so, as complementary rather than contradictory; and (2) that this counters the view of Kant's ethics as overly formalistic by recognizing his ‘empirical ethics’ as attending to the unsystematizable facets of a properly human moral life.