Kant's critique of rational psychology is a thought experiment that targets no individual or school, but rather the natural tendency of human reason to “hypostatize” the highest intellectual condition of all cognition (the pure ‘I think’) as though it were itself a cognition of the ‘I.’ To do so is to violate the very anti-circularity stricture also at work in Kant's better-known transcendental critiques of Locke and Hume. Along with a new type of circularity (level circularity), this article proposes a conception of transcendental arguments different from that of most contemporary debates regarding empiricism, naturalism, and Cartesian foundationalism.

In spite of its dominance, there are well-known problems with Rawls’s method of reflective equilibrium (MRE), as a method of justification in meta-ethics. One issue in particular has preoccupied commentators, namely, the capacity of this method to provide a convincing account of the objectivity of our moral beliefs. Call this the Lack-of-Objectivity Charge. One aim of this article is to examine the charge within the context of Rawls’s later philosophy, and I claim that the lack-of-objectivity charge remains unanswered. A second aim of this article is to examine the extent to which, despite Rawls’s express intention to avoid reliance on Kant’s moral philosophy, supplementing Rawls’s political constructivism with some Kantian elements, in particular Kant’s idea of a universal principle of right, not only addresses some of the issues raised by the lack-of-objectivity charge, but also does so without compromising the ability of the Rawlsian account to accommodate the pluralism of conceptions of the good, which he takes to be a fact of modern democracies. I argue for a revised justificatory methodology, which combines Rawls’s MRE and Kant’s Critical Method.

Many neo-Aristotelians argue that practical identities are normative, that is, they provide us with reasons for action and create binding obligations. Kantian constructivists agree with this insight but argue that contemporary Aristotelians fail to fully justify it. Practical identities are normative, Kantian constructivists contend, but their normativity necessarily derives from the normativity of humanity. In this paper, I shed light on this underexplored similarity between neo-Aristotelian and Kantian constructivist accounts of the normativity of practical identities, and argue that both ultimately fail. I end by suggesting an alternative justification of the claim that practical identities are normative.

The subject of this article is a powerful objection to the non-conceptualist interpretation of Kant’s transcendental deduction of the categories. Part of the purpose of the deduction is to refute the sort of scepticism according to which there are no objects of empirical intuition that instantiate the categories. But if the non-conceptualist interpretation is correct, it does not follow from what Kant is arguing in the transcendental deduction that this sort of scepticism is false. This article explains and assesses a number of possible responses to this objection.