Kant says that it can be rational to accept propositions on the basis of non-epistemic or broadly practical considerations, even if those propositions include “transcendental ideas” of supersensible objects. He also worries, however, about how such ideas (of freedom, the soul, noumenal grounds, God, the kingdom of ends, and things-in-themselves generally) acquire genuine positive content in the absence of an appropriate connection to intuitional experience. How can we be sure that the ideas are not empty “thought-entities (Gedankendinge)”—that is, speculative fancies (...) that do not and perhaps even cannot have referents in reality? In this paper I argue for an account of the fundamental problem here (i.e. that it is based in a concern about whether or not the objects of such ideas are "really possible" in Kant's technical sense). I then critically evaluate Kant's three proposed solutions to the problem. The third one involves an appeal to the complicated doctrine of "symbolization" that becomes prominent in Kant's later works. -/- . (shrink)

It is argued that the popular story that portrays Kant’s philosophical development as a gradual emancipation from his Leibniz-Wolffian roots that culminated in a total rejection of the Leibnizian philosophy by 1781 is not accurate. Kant’s many objections against the Leibnizian philosophy in the critical period are not directed against Leibniz himself but against the Leibniz-Wolffians. Kant considers Leibniz’s philosophy to be very close to his own, calling the Critique of Pure Reason the “true apology” of Leibniz. It is claimed (...) that this assessment is correct; the correctness is demonstrated with respect to Kant’s and Leibniz’s theories of space. (shrink)

The distinction between concept and intuition is of the utmost importance for understanding Kant’s critical philosophy. For, as Kant himself claimed, all the distinctive claims of this philosophy rest on, and develop out of, a detailed account of the way all our cognition of things requires both intuitions and concepts.

"Kant and the Capacity to Judge" will prove to be an important and influential event in Kant studies and in philosophy.

I provide a sympathetic reconstruction of Kant’s motivation for endorsing incompatibilism about human freedom. On my interpretation, Kant holds that if all the determining grounds of our actions were subject to natural necessity, we would never be free to respect or defy laws of practical reason, and for Kant such freedom is a condition for the possibility that our actions are governed by categorical imperatives. I argue that his view rests on a gripping construal of the rational imperfection that afflicts (...) the human will. (shrink)

I propose a new way of understanding Kant’s doctrine of freedom. My reading seeks to combine features of two popular opposed lines of interpretation, namely, of metaphysical and anti-metaphysical readings. I defend the view that Kant’s idealist attempt to ‘save’ human freedom involves substantive metaphysical commitments. However, I show that this interpretation can fruitfully integrate important insights that are standardly associated with deflationary readings: first, the idea that for Kant freedom and natural necessity can be ascribed to one and the (...) same human being; and second, the idea that for Kant the belief in freedom and the belief in natural necessity belong to two different standpoints. (shrink)

A central doctrine of Kant's Critique of Pure Reason holds that the content of human experience is rooted in an affection of sensibility by unknowable things in themselves. This famous and puzzling affection doctrine raises two seemingly intractable old problems, which can be termed the Indispensability and the Consistency Problems. By what right does Kant present affection by supersensible entities as an indispensable requirement of experience? And how could any argument for such indispensability avoid violating the Critique's doctrine of noumenal (...) ignorance? This essay develops a new solution to both problems, setting out from the continuity between Kant's early and mature views on sensibility and mind-world relations. Kant's early writings subscribe to an interactionist cosmology opposed to both Leibniz's preestablished harmony and Malebranche's occasionalism. The modern debate on mind-world relations shaping Kant's early cosmology points us to a widely recognized motivation for interactionism, turning on a constraint on agency within certain noninteractionist cosmologies. In particular, Kant's early conversion to a libertarian theory of freedom, together with his rejection of occasionalism, provides the basis for a compelling argument for the indispensability of world-mind affection relations. Extended to the transcendental idealist framework, the same argument reveals noumenal affection as an indispensable presupposition of some knowledge claims consistently upheld by Kant. This leads in turn to a satisfying solution to the Consistency Problem, showing that the doctrine of noumenal affection is not merely consistent with, but is partly motivated by, Kant's commitment to noumenal ignorance. (shrink)

Introduction -- Part I: Willing as practical knowing -- The will and practical judgment -- Fundamental practical judgments : the wish for happiness -- Part II: From presuppositions of judgment to the idea of a categorical imperative -- The formal presuppositions of practical judgment -- Constraints on willing -- Part III: Interpretation -- The categorical imperative -- Applications -- Conclusion.

One of Kant’s central central claims in the Critique of Pure Reason is that we cannot have knowledge of things as they are in themselves. This claim has been regarded as problematic in a number of ways: whether Kant is entitled to assert both that there are things in themselves and that we cannot have knowledge of them, and, more generally, what Kant’s commitment to things in themselves amounts to. A number of commentators deny that Kant is committed to there (...) actually being an aspect of reality which we cannot cognise; they argue that he is committed merely to the idea that we cannot avoid the concept of things as they are in themselves. I will argue in this paper that while transcendental idealism is partly an epistemological position, it is also partly a metaphysical position, and in specific, that Kant is committed to the claim that the things we cognise have, in addition to the way they appear to us, a nature that is independent of us, which we cannot cognise. (shrink)

The paper is an interpretation and defense of Kant's conception of things in themselves as noumena, along the following lines. Noumena are transempirical realities. As such they have several important roles in Kant's critical philosophy (Section 1). Our theoretical faculties cannot obtain enough content for a conception of noumena that would assure their real possibility as objects, but can establish their merely formal logical possibility (Sections 2-3). Our practical reason, however, grounds belief in the real possibility of some noumena, and (...) even knowledge of the noumenal reality of a free will (Section 4). Section 5 defends Kant's conception of noumena as a good piece of philosophy, particularly with respect to its distinction between logical and real possibility. Are noumena numerically identical with experienced (phenomenal) objects? Kantian principles yield the answers that human selves are, God isn't, and it's harder to say about bodies (Section 6). (shrink)

In this new book, Michael Friedman argues that Kant's continuing efforts to find a metaphysics that could provide a foundation for the sciences is of the utmost ...

The paper is an interpretation and defense of Kant’s conception of things in themselves as noumena, along the following lines. Noumena are transempirical realities. As such they have several important roles in Kant’s critical philosophy (Section 1). Our theoretical faculties cannot obtain enough content for a conception of noumena that would assure their real possibility as objects, but can establish their merely formal logical possibility (Sections 2-3). Our practical reason, however, grounds belief in the real possibility of some noumena, and (...) even knowledge of the noumenal reality of a free will (Section 4). Section 5 defends Kant’s conception of noumena as a good piece of philosophy, particularly with respect to its distinction between logical and real possibility. Are noumena numerically identical with experienced (phenomenal) objects? Kantian principles yield the answers that human selves are, God isn’t, and it’s harder to say about bodies (Section 6). (shrink)

There is substantial textual evidence that Kant held the doctrine of double affection: subjects are causally affected both by things in themselves and by appearances. However, Kant commentators have been loath to attribute this view to him, for the doctrine of double affection is widely thought to face insuperable problems. I begin by explaining what I take to be the most serious problem faced by the doctrine of double affection: appearances cannot cause the very experience in virtue of which they (...) have their empirical properties. My solution consists in distinguishing the sense of ‘experience’ in which empirical objects cause experience from the sense of ‘experience’ in which experience determines empirical objects. I call the latter “universal experience”. I develop my conception of universal experience, and then I explain how it solves the problem of double affection. I conclude by addressing several objections. (shrink)