Kant's Account of Nature's Systematicity and the Unity of Theoretical and Practical Reason1

In this paper I argue that if one is to do justice to reason's unity in Kant, then one must acknowledge that reason's practical ends are presupposed in every theoretical investigation of nature. Thus, contrary to some other commentators, I contend that the notion of the metaphysical ground of the unity of nature should not be attributed to the “dynamics of reason” and its “own practical purposes.” Instead, the metaphysical ground of the unity of nature is in fact an indispensable and necessary notion for reason in both its theoretical and practical functions, but this need of reason to presuppose such a notion can only find its adequate proof in the practical. By offering a synopsis of Kant's accounts of nature's systematicity in the Transcendental Ideal of the Critique of Pure Reason (Part I), the Appendix to the Dialectic of the Critique of Pure Reason (Part II), and in the Critique of Judgment (Part III), I identify in each section Kant's theoretical and practical arguments for reason's presupposition of the “unconditioned,” demonstrate their structural interdependence, and show a general continuity in Kant's position on this issue throughout his critical system.     

Kant’s Regulative Metaphysics of God and the Systematic Lawfulness of Nature

In the “Appendix to the Transcendental Dialectic” of the Critique of Pure Reason, Kant contends that the idea of God has a positive regulative role in the systematization of empirical knowledge. But why is this regulative role assigned to this specific idea? Kant's account is rather opaque, and this question has also not received much attention in the literature. In this article, I argue that an adequate understanding of the regulative role of the idea of God depends on the specific metaphysical content Kant attributes to it in the Critique and other writings. I show that neither a heuristic principle of conceptual systematicity, nor conceiving God as a hypothesis of an intelligent designer, can satisfy the demands of reason to make the unity and necessity of the laws of nature intelligible. Regarding the positive account about the metaphysical content of the idea of God, I support my argument by referring to Kant's precritical discussion of the usefulness of the conception of God for the project of science, and by expounding Kant's critical account of the necessity of the laws of nature. Thus, my account sheds light on the continuity of Kant's conception of God and his appropriation of his own rationalistic metaphysics.     

Kant on space,time, and respect for the moral law as analogous formal elements of sensibility

To advance a successful reading of Kant's theory of motivation, his interpreter must have a carefully developed position on the relation between our rational and sensible capacities of mind. Unfortunately, many of Kant's commentators hold an untenably dualistic conception, understanding reason and sensibility to be necessarily conflicting aspects of human nature that saddle Kant with a rigoristic and fundamentally divided moral psychology. Against these interpreters, I argue for a reading that maintains a unified conception, claiming that we must think of reason and sensibility as interdependent capacities, which stand to one another as form to matter. Our sensible nature thus does not stand opposed to reason; its fundamental character is determined by reason's activity. I take Kant's account of moral motivation and the feeling of respect to represent the lynchpin of this unified account. Against interpreters who would emphasize either the intellectual or affective nature of respect, I claim that it should be understood as the formal element of moral sensibility, the result of practical reason determining the capacity to feel and fundamentally transforming its character. To make this argument, I draw on Kant's account of sensibility in the Critique of Pure Reason, claiming that space, time, and respect for the moral law are analogous formal elements of sensibility.     

From Kant to Sade: a fragment of the history of philosophy in the Dialectic of Enlightenment

In this paper, I set out (1) to consider the extent to which Horkheimer and Adorno's account of the transition from Kant's philosophy to key features of the novels of the Marquis de Sade in the Second Excursus of their Dialectic of Enlightenment can be viewed as a fragment of the ‘history of philosophy’ and (2) to explain this account in a way that allows us to ask whether it succeeds in establishing a necessary connection between Kant's philosophy and Sade's novels. In connection with (2), a particular problem emerges. This problem concerns the role played by a non-instrumental form of reason in Horkheimer and Adorno's attempt to establish an essential connection between Kant's theoretical philosophy and Sade's novels, in which the practical implications of the theoretical employment of reason allegedly become explicit. It will be shown that, despite appearances to the contrary, an employment of reason of the relevant type is not identified by Kant in the Critique of Pure Reason.     

Perception and the Categories: A Conceptualist Reading of Kant's Critique of Pure Reason

Abstract: Philosophers interested in Kant's relevance to contemporary debates over the nature of mental content—notably Robert Hanna and Lucy Allais—have argued that Kant ought to be credited with being the original proponent of the existence of ‘nonconceptual content’. However, I think the ‘nonconceptualist’ interpretations that Hanna and Allais give do not show that Kant allowed for nonconceptual content as they construe it. I argue, on the basis of an analysis of certain sections of the A and B editions of the Transcendental Deduction, for a ‘conceptualist’ reading of Kant's Critique of Pure Reason. My contention is that since Kant's notion of empirical intuition makes essential reference to the categories, it must be true for him that no empirical intuition can be given in sensibility independently of the understanding and its categories.     

Adorno on Kant,Freedom and Determinism

Abstract: In this paper I argue that Adorno's metacritique of freedom in Negative Dialectics and related texts remains fruitful today. I begin with some background on Adorno's conception of ‘metacritique’ and on Kant's conception of freedom, as I understand it. Next, I discuss Adorno's analysis of the experiential content of Kantian freedom, according to which Kant has reified the particular social experience of the early modern bourgeoisie in his conception of unconditioned freedom. Adorno argues against this conception of freedom and suggests that freedom is always conditioned by our embodiment and by our social and historical situation. Finally, I turn to Adorno's criticism of Kant's discussion of freedom and determinism in the Critique of Pure Reason and argue that while his philosophical argument against Kant fails, his metacritical argument remains suggestive. Scepticism about freedom arises when the standpoint of theoretical reason encroaches upon the standpoint of practical reason and assimilates persons to things.     

Reason unbound: Kant's theory of regulative principles

It is an essential part of Kant's conception of regulative principles and ideas that those principles and ideas are in a certain sense indeterminate. The relevant sense of indeterminacy is cashed out in a section in the Antinomies where Kant says that the regress of conditions of experience forms not a “regressus in infinitum” but a “regressus in indefinitum.” The mathematics that Kant appears to rely on in making this distinction turns out to be problematic, as Jonathan Bennett showed long ago. But I suggest that despite this, there is another mathematically legitimate way to make Kant's point, one enunciated by, among others, Michael Dummett. This reading is corroborated, I suggest, by Kant's conception of reason as a radically open‐ended endeavor.     

Hegel's critique of Kant

In this paper we present a reconstruction of Hegel's critique of Kant. We try to show the congruence of that critique in both theoretical and practical philosophy. We argue that this congruence is to be found in Hegel's criticism of Kant's hylemorphism in his theoretical and practical philosophy. Hegel is much more sympathetic to Kant's response to the distinction between matter and form in his theoretical philosophy and he credits Kant with ‘discovering’ here that thinking is an activity that always takes place within a greater whole. He, however, argues that the consequences of this are much more significant than Kant suspects and that, most importantly, the model of cognition in which thought (form) confronts something non-thought (matter) is unsustainable. This leads to Hegel's appropriation of Kantian reflective judgements, arguing that the greater whole in which thinking takes place is a socially shared set of meanings, something resembling what Kant calls a sensus communis. From here, it is not far to Hegel's Geist, which eventually gains self-consciousness in Sittlichkeit, a whole of social practices of mutual recognition. In practical philosophy, Hegel argues for the importance of situating oneself within such a whole in order to attain the self-knowledge required for autonomous, or ethically required, action. For this to happen, he claims, it is necessary to recognise the status of Kantian Moralität as a form of Sittlichkeit or social practice. This would justify our practices without an appeal to a ‘fact of reason’ and also allow a wider range of actions that could count as autonomous.     

Value and Obligation Once More

In Understanding Moral Obligation (2012), Robert Stern sets out to provide a fresh interpretation of the role of autonomy in Kant's moral philosophy and attempts to rectify J. B. Schneewind's standard account in The Invention of Autonomy (1998). While Stern agrees that Kant's resort to autonomy is at the basis of a constructivist account of moral obligation, he claims that autonomy plays no role in Kant's theory of value, such that, in this respect, Kant remains a realist. Accordingly, Stern characterizes Kant's moral philosophy as a “hybrid” view because he sees it as involving a compromise between realism with regard to value and constructivism with regard to obligation. Stern's interpretation relies on a sharp distinction between value and obligation. The purpose of the present article is to question Stern's reliance on that rigid distinction, which involves intermixing theoretical and practical reason and assumes a distorted view of human agency.     

Varieties of Reflection in Kant's Logic

For Kant, ‘reflection’ (Überlegung, Reflexion) is a technical term with a range of senses. I focus here on the senses of reflection that come to light in Kant's account of logic, and then bring the results to bear on the distinction between ‘logical’ and ‘transcendental’ reflection that surfaces in the Amphiboly chapter of the Critique of Pure Reason. Although recent commentary has followed similar cues, I suggest that it labours under a blind spot, as it neglects Kant's distinction between ‘pure’ and ‘applied’ general logic. The foundational text of existing interpretations is a passage in Logik Jäsche that appears to attribute to Kant the view that reflection is a mental operation involved in the generation of concepts from non-conceptual materials. I argue against the received view by attending to Kant's division between ‘pure’ and ‘applied’ general logic, identifying senses of reflection proper to each, and showing that none accords well with the received view. Finally, to take account of Kant's notion of transcendental reflection I show that we need to be attentive to the concerns of applied logic and how they inform the domain-relative transcendental logic that Kant presents in the first Critique.     

From the clarity of ideas to the validity of judgments: Kant's farewell to epistemic perfectionism

Against the standard interpretation of Kant's ‘Copernican revolution’ as the prioritization of epistemology over ontology, I argue in this paper that his critique of traditional metaphysics must be seen as a farewell to the perfectionism on which early modern rationalist ontology and epistemology are built. However, Kant does not simply replace ‘perfection’ with another fundamental concept of normativity. More radically, Kant realizes that it is not simply ideas but only the relation of ideas that can be subject to norms, and thus he shifts the focus from the reality of ideas to the validity of judgments. Section 1 of this paper clarifies the pre-Kantian role of the concept of perfection and examines Kant's critical response to that concept. Section 2 identifies Kant's point of departure from the Cartesian ‘way of ideas.’ Section 3 explains the key problem of his novel account of epistemic normativity. I conclude that Kant's anti-perfectionism must be seen as the driving force behind his ‘Copernican revolution’ in order to fully appreciate his mature account of epistemic normativity.     

Kant on the Content of Cognition

I present an argument for an interpretation of Kant's views on the nature of the ‘content [Inhalt]’ of ‘cognition [Erkenntnis]’. In contrast to one of the longest standing interpretations of Kant's views on cognitive content, which ascribes to Kant a straightforwardly psychologistic understanding of content, and in contrast as well to the more recently influential reading of Kant put forward by McDowell and others, according to which Kant embraces a version of Russellianism, I argue that Kant's views on this topic are of a much more Fregean bent than has traditionally been admitted or appreciated. I conclude by providing a sketch of how a better grasp of Kant's views on cognitive content in general can help bring into sharper relief what is, and what is not, at stake in the recent debates over whether Kant accepts a particular kind of cognitive content—namely, non‐conceptual content.     

Logical Foundations and Kant's Principles of Formal Logic

The abstract status of Kant's account of his ‘general logic’ is explained in comparison with Gödel's general definition of a formal logical system and reflections on ‘abstract’ (‘absolute’) concepts. Thereafter, an informal reconstruction of Kant's general logic is given from the aspect of the principles of contradiction, of sufficient reason, and of excluded middle. It is shown that Kant's composition of logic consists in a gradual strengthening of logical principles, starting from a weak principle of contradiction that tolerates a sort of contradictions in predication, and then proceeding to the (constructive) principle of sufficient reason, and to a classical-like logic, which includes the principle of excluded middle. A first-order formalisation is applied to this reconstruction, which reveals implicit modalities in Kant's account of logic, and confirms the implementability of Kant's logic into a sound and complete formal system.     

Kant's Commitment to Metaphysics of Morals

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 (Barbara Herman, Allen Wood, and Christine Korsgaard) 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.     

Kant on Construction,Apriority, and the Moral Relevance of Universalization

This paper introduces a referential reading of Kant’s practical project, according to which maxims are made morally permissible by their correspondence to objects, though not the ontic objects of Kant’s theoretical project but deontic objects (what ought to be). It illustrates this model by showing how the content of the Formula of Universal Law might be determined by what our capacity of practical reason can stand in a referential relation to, rather than by facts about what kind of beings we are (viz., uncaused causes). This solves the neglected puzzle of why there are passages in Kant’s works suggesting robust analogies between mathematics and ethics, since to universalize a maxim is to test a priori whether a practical object with that particular content can be constructed. An apparent problem with this hypothesis is that the medium of practical sensibility (feeling) does not play a role analogous to the medium of theoretical sensibility (intuition). In response I distinguish two separate Kantian accounts of mathematical apriority. The thesis that maxim universalization is a species of construction, and thus a priori, turns out to be consistent with the account of apriority that informs Kant’s understanding of actual mathematical practice.     

Kant on Intentionality,Magnitude, and the Unity of Perception

This paper addresses a number of closely related questions concerning Kant's model of intentionality, and his conceptions of unity and of magnitude [Gröβe]. These questions are important because they shed light on three issues which are central to the Critical system, and which connect directly to the recent analytic literature on perception: the issues are conceptualism, the status of the imagination, and perceptual atomism. In Section 1, I provide a sketch of the exegetical and philosophical problems raised by Kant's views on these issues. I then develop, in Section 2, a detailed analysis of Kant's theory of perception as elaborated in both the Critique of Pure Reason and the Critique of Judgment; I show how this analysis provides a preliminary framework for resolving the difficulties raised in Section 1. In Section 3, I extend my analysis of Kant's position by considering a specific test case: the Axioms of Intuition. I contend that one way to make sense of Kant's argument is by juxtaposing it with Russell's response to Bradley's regress; I focus in particular on the concept of ‘unity’. Finally, I offer, in Section 4, a philosophical assessment of the position attributed to Kant in Sections 2 and 3. I argue that, while Kant's account has significant strengths, a number of key areas remain underdeveloped; I suggest that the phenomenological tradition may be read as attempting to fill precisely those gaps.     

Realizing the Good: Hegel's Critique of Kantian Morality

Although the best‐known Hegelian objection against Kant's moral philosophy is the charge that the categorical imperative is an ‘empty formalism’, Hegel's criticisms also include what we might call the realizability objection. Tentatively stated, the realizability objection says that within the sphere of Kantian morality, the good remains an unrealizable ‘ought’ – in other words, the Kantian moral ‘ought’ can never become an ‘is’. In this paper, I attempt to come to grips with this objection in two steps. In the first section of the paper, I provide an initial reading of the objection, according to which Hegel agrees with Kant's formulation of the realizability problem but disagrees with the specific Kantian solution, namely, with the Kantian idea of the highest good and the doctrine of the postulates. In the second section, I go on to argue that this reading is potentially too superficial and offer a more far‐reaching interpretation whereby Hegel is ultimately targeting fundamental distinctions (between, for instance, reason and sensibility) of Kant's moral theory. I end by employing these more far‐reaching results of Hegel's objection to sketch some features of Hegel's alternative ethical view.     

Responsibility beyond rationality: the case for rhizomatic consequentialism

A key challenge for education is to encourage children to act responsibly. If ‘spiritual literacy’ does not involve an autonomous, rational soul capable of ‘reading and writing the world as God intended’, it must refer to ethical (and perhaps religious) capacity in relation to contingent actions in a context free of moral absolutes. In relation to the former, Kant's Categorical Imperative supposed that actions are either right or wrong according to an absolute reason derived from the most basic templates of human sense making. According to Kant, therefore, right is rational irrespective of the apparent consequences of specific actions. In contrast, in an age lacking Kant's beliefs in both God and absolute reason, it is tempting to see an unethical pragmatism as the only alternative to the Categorical Imperative. However, it is possible to instil responsibility through a consequentialism based on a broader conception of relatedness, inspired by Deleuze and Guattari's notion of the ‘rhizome’. ‘Rhizomatic consequentialism’, as here defined, provides a ‘third way’ for moral education between instilling an understanding of absolute right and wrong and encouraging the belief that ‘right is what you can get away with’.