This article provides a new reconstruction and evaluation of Kant’s argument in §IX of the second Critique’s Dialectic. Kant argues that our cognitive faculties are wisely adapted to our practical vocation since their failure to supply theoretical knowledge of God and the immortal soul is a condition of possibility for the highest good. This new reconstruction improves upon past efforts by greater fidelity to the form and content of Kant’s argument. I show that evaluating Kant’s argument requires settling various other issues in the interpretation of his moral philosophy, e.g. his account of moral psychology, motivation, education, and development.

It is widely claimed that the second Critique’s argument for the postulate of immortality is relevantly different from the first Critique’s argument for the postulate. It is also widely claimed that after the second Critique, Kant distances himself from its particular version of the argument, and even the postulate altogether. It is the purpose of this article to challenge these claims, arguing instead that (a) there is overwhelming textual evidence showing that Kant did not abandon the postulate; (b) the second Critique does not contain a substantially different argument for the postulate than how it is argued for in the first Critique; and (c) the philosophical objections levied against the second Critique’s argument, including its putative substitution of holiness for virtue, become moot once its argument is better understood.

According to Lea Ypi, Kant’s attempt in the first Critique to unify reason via the practical route fails because his notion of purposiveness as design commits him to a dogmatic metaphysics. I challenge this claim on two grounds. First, I argue that practical reason does not have an interest in a strong modal connection that guarantees the unity of freedom and nature rather than a weak modal connection that merely affirms the possibility of our ends. Second, I highlight that the epistemic status of practical ideas is one of faith or hope rather than knowledge. Hence, Kant’s attempt to unify reason via the practical route can be reconstructed in a way that is largely in line with the commitments of his critical philosophy.

Kant’s discussion of the highest good is subject to continuous disagreement between the proponents of two interpretations of this concept. According to the secular interpretation, Kant conceived of the highest good as a political ideal which can be realized through human agency alone, albeit only from the Critique of the Power of Judgement onwards. By way of contrast, proponents of the theological interpretation find Kant’s treatment of the highest good in his later works to be wholly coherent with the discussions of this concept found in the second Critique. In their view, however, Kant never conceived of the highest good as a political ideal, and some go as far as to argue that it is the work of God alone. In this article, I defend a theologico-political account of the highest good that avoids the pitfalls of both readings.

This article examines Kant’s understanding of moral progress, especially in his Religion where he argues that religion and, more importantly, the foundation of an ethical community are necessary to promote moral progress. However, it is less the identification of any factual moral progress but rather the idea of moral progress as an action guiding principle that Kant identifies as central. The conclusion shows how Kant’s insights are in accordance with the argument that we should not look for comprehensive moral progress in history but adhere to the idea of possible future moral progress.

For Kant, ‘wish’ is a technical term denoting a strange species of desire. It is an instance in which someone wills something that she simultaneously knows she cannot bring about. As a result, it is, in one sense, antithetical to morality, which deals with ‘ought implies can’. I will argue that Kant re-evaluated wishing as (to some extent) causally efficacious and, further, of moral relevance. This re-evaluation has not been discussed in the literature, yet has been lurking in plain sight in a subtle shift in two versions of a footnote from the Critique of the Power of Judgement.

This paper considers two contenders for the title of highest good in Kant's theory of practical reason: happiness proportioned to virtue and the maximization of happiness and virtue. I defend the ‘proportionality thesis’ against criticisms made by Andrews Reath and others, and show how it resolves a dualism between prudential and moral practical reasoning. By distinguishing between the highest good as a principle of evaluation and an object of agency, I conclude that the maximization of happiness and virtue is a corollary of the instantiation of the proportionality thesis.