A definitive feature of Kant's moral philosophy is its rationalism. Kant insists that moral theory, at least at its foundation, cannot take account of empirical facts about human beings and their circumstances in the world. This is the core of Kant's commitment to ‘metaphysics of morals’, and it is what he sees as his greatest contribution to moral philosophy. The paper clarifies what it means to be committed to metaphysics of morals, why Kant is committed to it, and where he (...) thinks empirical considerations may enter moral theory. The paper examines recent work of contemporary Kantians who argue that there is a central role for empirical considerations in Kant's moral theory. Either these theorists interpret Kant himself as permitting empirical considerations to enter, or they propose to extend Kant's theory so as to allow them to enter. With some qualifications, I argue that these interpretive trends are not supported by the texts, and that the proposed extensions are not plausibly Kantian. Kant's insistence on the exclusion of empirical considerations from the foundations of moral theory is not an incidental feature of his thought which might be modified while the rest remains unchanged. Rather, it is the very centre of his endeavours in moral philosophy. If we disagree with it, I argue, we have grounds for moving to a distinctly different theoretical framework. (shrink)

In this paper, I give a Kantian answer to the question whether and why it would be inappropriate to blame people suffering from mental disorders that fall within the schizophrenia spectrum. I answer this question by reconstructing Kant’s account of mental disorder, in particular his explanation of psychotic symptoms. Kant explains these symptoms in terms of various types of cognitive impairment. I show that this explanation is plausible and discuss Kant’s claim that the unifying feature of the symptoms is the (...) patient’s inability to enter into an exchange of reasons with others. After developing a Kantian Quality of Will Thesis, I analyze some real life cases. Firstly, I argue that delusional patients who are unable to enter into an exchange of epistemic reasons are exempted from doxastic rather than moral responsibility. They are part of the moral community and exonerated from moral blame only if their actions do not express a lack of good will. Secondly, I argue that disorganized patients who are unable to form intentions and to make plans are exempted from moral responsibility because they do not satisfy the conditions for agency. (shrink)

This paper offers a critique of Christine Korsgaard’s interpretation of Kantian instrumental reason. Korsgaard understands Kantian hypothetical imperatives to share a common normative source with the categorical imperative – namely self-legislating, human rational agency. However, her reading of Kantian hypothetical imperatives is problematic for three reasons. Firstly, Korsgaard’s agent-centred approach renders incoherent Kant’s analytic-synthetic division. Secondly, by minimising the dualistic framework of Kant’s practical philosophy the dialectical character of practical rationality is lost: norms of instrumental reasoning therefore become confused with (...) those of moral reasoning. Thirdly, this in turn curtails the distinct critical authority of pure practical rationality over instrumental choice. The paper argues that we need to understand the normativity of instrumental rationality through the lens of Kant’s dualisms. An alternative interpretation is offered which highlights how the norms of hypothetical imperatives appeal to standards of theoretical cognition and practical efficiency rather than the self-legislative demands of pure practical reason. (shrink)

This critical survey of recent work on Kant's doctrine of the fact of reason and his doctrine of the practical postulates (of freedom, God, and immortality) assesses the implications of these doctrines for the debate about realism and antirealism in Kant's moral philosophy. Section 1 briefly surveys some salient considerations from the first Critique and Groundwork. In section 2, I argue that recent work on the role, content, "factual" nature, and epistemic status of the fact of reason does not support (...) an anti-realist interpretation of Kant's ethics. In section 3, I argue that recent work on the derivation and epistemic and ontological status of the practical postulates does not support an anti-realist interpretation of Kant's ethics. (shrink)

Kant’s metaphilosophy has three main parts: (1) an essentialist project (“What is philosophy?”); (2) a methodological project (“How do we do philosophy?”); and (3) a taxonomic project (“What are the different parts of philosophy, and how are they related?”). This paper focuses on the third project. In particular, it explores one of the most intriguing yet puzzling aspects of Kant’s philosophy, viz. the relationship between what Kant calls ‘pure’ philosophy vs. ‘applied’, ‘empirical’ or what we can broadly refer to as (...) ‘impure’ philosophy. (As we shall see, in order to be able to address this third project, we shall also need to examine the other two projects in detail.) My plan is as follows. First, I discuss four main areas of pure vs. impure philosophy: (i) ‘pure logic’ vs. ‘applied logic’; (ii) ‘rational psychology’ vs. ‘empirical psychology’; (iii) ‘pure metaphysics of nature’ vs. ‘physics’ and (iv) ‘pure morality’ or a ‘metaphysics of morals’ vs. ‘moral anthropology’, ‘practical anthropology’ or ‘applied moral philosophy’. Based on this, I identify four key differences between pure and impure philosophy. Second, I critically examine four different readings of Kant’s views about the status of ‘impure’ philosophy: (a) that it is not genuine philosophy; (b) that it is bad or inferior philosophy; (c) that it is instrumentally valuable; and (d) that it constitutes an indispensable part of Kant’s philosophy, both in a theoretical and practical sense. I argue that Kant is best interpreted as endorsing readings (c) and (d). Third, I offer some concluding remarks. (shrink)

European Journal of Philosophy, Volume 29, Issue 4, Page 795-810, December 2021.