This article examines the Kantian thesis of the a priori nature of our knowledge of space. Because it makes the representation of objects possible as external to us and all others, and consequently, as distinct and individualized, space (whatever its structure may be) claims the status as necessary condition and as apriori possibility of all knowledge. However, in the light of various physical, psychological and philosophical considerations, it seems that the particular structure allocated by Kant to space (i.e. uniqueness, infinity, (...) continuity, homogeneity, isotropy, Euclidean character and three-dimensional character) is neither necessary nor a priori but is rather contingent and dependent on experience. For this reason a pragmatist relativization of the transcendental approach appears to be necessary: the structure of space which makes knowledge possible is not apriori in an absolute sense, but rather, it is determined within the context of a certain practice, which is characterized by a certain mode of interaction with the environment and reveals particular empirical constraints to which this spatial structure must fit. (shrink)

A look at the dynamical concept of space and space-generating processes to be found in Kant, J.F. Herbart and the mathematician Bernhard Riemann's philosophical writings.

Abstract: This paper develops a novel interpretation of Kant's argument from incongruent counterparts to the effect that the representations of space and time are intuitions rather than concepts. When properly understood, the argument anticipates the contemporary position whereby the meaning of indexicals cannot be captured by descriptive contents.

The reply to Kanterian offers a rebuttal of his central criticisms. It reaffirms the difference between Kant's arguments in the Aesthetic and at B 148-9; it rejects the alleged error of logic in Fischer's (and my) arguments; and it rejects Kanterian's reading of passages in the Preface (A xx-xxii) and of the Amphiboly. Beyond these specific points Kanterian assumes that Kant's project in the first Critique cannot be understood as a and so begs the question at issue.

In Newtonian physics, all phenomena take place in absolute space, which is a fixed scenario, and are referred to absolute time, which rules all processes. Motion is governed by a set of basic differential equations, and it is possible, at least in principle, to deduce future events from present initial conditions.

In the Transcendental Aesthetic, Kant famously makes the following startling claim, which we can call the transcendental ideality thesis concerning the nature of space, or, for ease of reference in what follows, simply “TI”.

This paper outlines a new interpretation of an argument of Kant's for the existence of absolute space. The Kant argument, found in a 1768 essay on topology, argues for the existence of Newtonian-Euclidean absolute space on the basis of the existence of incongruous counterparts (such as a left and a right hand, or any asymmetrical object and its mirror-image). The clear, intrinsic difference between a left hand and a right hand, Kant claimed, cannot be understood on a relational view of (...) space - for in terms of the spatial relations of their parts, there is no difference to be found. Kant's argument has been interpreted by, among others, Graham Nerlich (in 1973, Hands, Knees and Absolute Space, The Journal of Philosophy). I briefly discuss Nerlich, and then offer a different reconstruction of the argument, one that appears to be closer to Kant's text. The reconstruction, however, essentially involves ascription of primitive identity to parts of space. Comparing the Kantian absolutist account of incongruous counterparts using primitive identity to the correct relationist account, I conclude that the absolutist account pays a heavy metaphysical price, without buying any genuine explanatory advantage over the relationist. I go on to examine recent suggestions that parity-non-conservation phenomena in quantum physics allow a stronger version of Kant's challenge to relationism. On closer examination, it turns out that here too the absolutist or substantivalist must be appealing to space parts with primitive identity in order to claim an advantage over relationists; and here too, I argue the substantivalist story really has no advantage over the correct relationist account. (shrink)

Trendelenburg argued that Kant's arguments in support of transcendental idealism ignored the possibility that space and time are both ideal and real. Recently, Graham Bird has claimed that Trendelenburg (unlike his contemporary Kuno Fischer) misrepresented Kant, confusing two senses of . I defend Trendelenburg's : the ideas of space and time, as a priori and necessary, are ideal, but this does not exclude their validity in the noumenal realm. This undermines transcendental idealism. Bird's attempt to show that the Analytic considers, (...) but rejects, the alternative fails: an epistemological reading makes Kant accept the alternative, while an ontological reading makes him incoherent. As I demonstrate, Trendelenburg acknowledged the ambiguity of , focusing on the transcendental, not the empirical sense. Unlike Fischer, Bird denies Kant's commitment to things-in-themselves in favour of a descriptivist, non-ontological reading of transcendental idealism as an inventory of . But neither Bird's descriptivism, nor Fischer's commitment to things-in-themselves, answers Trendelenburg's sceptical worry about transcendental idealism. (shrink)

This paper is an exposition and defense of Kant’s philosophy of geometry. The main thesis is that Euclidean geometry investigates the properties of geometrical objects in an inner space that is given to us a priori (pure space) and hence is a priori and synthetic. This thesis is supported by arguing that Euclidean geometry requires certain intuitive objects (Sect. 1), that these objects are a priori constructions in pure space (Sect. 2), and finally that the role of geometrical construction is (...) to provide geometrical objects, not concepts, as some have claimed (Sect. 3). (shrink)

It is argued that geometrical intuition, as conceived in Kant, is still crucial to the epistemological foundations of mathematics. For this purpose, I have chosen to target one of the most sympathetic interpreters of Kant's philosophy of mathematics – Michael Friedman – because he has formulated the possible historical limitations of Kant's views most sharply. I claim that there are important insights in Kant's theory that have survived the developments of modern mathematics, and thus, that they are not so intrinsically (...) bound up with the logic and mathematics of Kant's time as Friedman will have it. These insights include the idea that mathematical knowledge relies on the manipulation of objects given in quasi-perceptual intuition, as Charles Parsons has argued, and that pure intuition is a source of knowledge of space itself that cannot be replaced by mere propositional knowledge. In particular, it is pointed out that it is the isomorphism between Kantian intuition and a spatial manifold that underlies both the epistemic intimacy of the most fundamental type of geometrical intuition as well as that of perceptual acquaintance. (shrink)

Kant argued that the perceptual representations of space and time were templates for the perceived spatiotemporal ordering of objects, and common to all modalities. His idea is that these perceptual representations were specific to no modality, but prior to all—they are pre-modal, so to speak. In this paper, it is argued that active perception—purposeful interactive exploration of the environment by the senses—demands premodal representations of time and space.

Kant's account of space as an infinite given magnitude in the Critique of Pure Reason is paradoxical, since infinite magnitudes go beyond the limits of possible experience. Michael Friedman's and Charles Parsons's accounts make sense of geometrical construction, but I argue that they do not resolve the paradox. I argue that metaphysical space is based on the ability of the subject to generate distinctly oriented spatial magnitudes of invariant scalar quantity through translation or rotation. The set of determinately oriented, constructed (...) geometrical spaces is a proper subset of metaphysical space, thus, metaphysical space is infinite. Kant's paradoxical doctrine of metaphysical space is necessary to reconcile his empiricism with his transcendental idealism. (shrink)

The thesis of this essay is that Kant's theory of the “forms of intuition” can be regarded as an account of the structure of our embodied perspective. The ideality and subjectivity of space is concluded to be an account of the perspective relative nature of the figure-ground relationship or how it is that objects emerge for us in empirical experience as being orientated in a spatio-temporal field. Time is regarded similarly as the event-series relationship. The significant role of embodiment in (...) Kant's thought on space and time is explored through a textual analysis of all of Kant's writings on the subject. By recovering the importance of the body to Kant's theoretical philosophy, the ontological implications of his theory of space and time and his idealism can be made more plausible. (shrink)

Kant uses incongruent counterparts in his work before and after 1781, but not in the first Critique. Given the relevance that incongruent counterparts had for his thought on space, and their persistence in his work during the 1780s, it is plausible to think that he had a reason for leaving them out of both editions of the Critique. Two implausible conjectures for their absence are here considered and rejected. A more plausible alternative is put forth, which explains that textual absence (...) as a result of the synthetic method of presentation intended for the Critique. (shrink)

Kant’s treatments of incongruent counterparts have been criticized in the recent literature. His 1768 essay has been charged with an ambiguous use of the notion of ‘inner ground’, and his 1770 claim that those differences cannot be apprehended conceptually is thought to be false. The author argues that those two charges rest on an uncharitable reading. ‘Inner ground’ is equivocal only if misread as mapping onto Leibniz notion of quality. Concepts suffice to distinguish counterparts, but are insufficient to specify their (...) spatial forms. Kant’s claims are reasonable and plausible, and have been reaffirmed repeatedly in contemporary discussions of demonstrative identification. (shrink)

: Kant's 'argument from geometry' is usually interpreted to be a regressive transcendental argument in support of the claim that we have a pure intuition of space. In this paper I defend an alternative interpretation of this argument according to which it is rather a progressive synthetic argument meant to identify and establish the essential role of pure spatial intuition in geometric cognition. In the course of reinterpreting the 'argument from geometry' I reassess the arguments of the Aesthetic and illustrate (...) the origin of Kant's view of the role of pure intuition in geometry. (shrink)

In this paper, I investigate an important aspect of Kant's theory of pure sensible intuition. I argue that, according to Kant, a pure concept of space warrants and constrains intuitions of finite regions of space. That is, an a priori conceptual representation of space provides a governing principle for all spatial construction, which is necessary for mathematical demonstration as Kant understood it.

Two puzzles with regard to the Kritik der reinen Vernunft (KrV) are incongruent counterparts and causality. In De mundi sensibilis atque intelligibilis forma et principiis (MSI), Kant indicates that the experience of things like left and right hands, so-called incongruent counterparts, involve certain pure intuitions, and hence constitute one line of evidence for the claim that the concept of space itself is a pure intuition. In KrV, Kant again argues that the concept of space itself is a pure intuition, but (...) does not cite the experience of incongruent counterparts as evidence for this claim. Since there is ostensibly nothing in KrV which tells against the existence of the experiences of incongruent counterparts, the natural question is: “Why, in KrV, does Kant not cite the experience of incongruent counterparts as evidence for the claim that the concept of space is a pure intuition?” The problem with causality is as follows. One of the most primary and basic claims of KrV is that empirical experience is structured by non-empirical concepts, such as substantiality and causality. In a portion of KrV entitled the Transcendental Deduction, Kant gives section 20 the heading “All sensible intuitions stand under the categories, as conditions under which alone their the manifold can come together in one consciousness”. Since categories are those concepts which structure empirical experience, section 20 has demonstrated that all sensible intuitions are subject to substantiality and causality. However, there is a later portion of KrV entitled the Second Analogy with the heading “Principle of temporal sequence according to the law of causality: All alterations occur in accordance with the law of the connection of cause and effect”. Thus, the natural question is: “What does the Second Analogy demonstrate about causality which the Transcendental Deduction did not already demonstrate about causality?”. (shrink)

In this paper we want to show how far the early, pre-critical Kant develops a theory of the constitution of space that not only anticipates insights usually attributed to the phenomenological theory of lived space with its emphasis on the constitutively central role of the human lived-body, but which also establishes the foundation for Kant’s Copernican turn according to which space is understood as ‘form of intuition’, implied in the activity of the transcendental subject. The key to understand this role (...) of the body lies in Kant’s understanding of the asymmetrical nature of a pair of hands, which despite being equal in size and structure, remain incongruent counterparts, and thus evade integration into a homogenous and purely self-referential form of space. (shrink)

Kant’s three Analogies of Experience, in his Critique of Pure Reason, represent a highly condensed attempt to establish the metaphysical foundations of Newtonian physics. His strategy is to show that the organization of experience in terms of a world of enduring substances undergoing mutual causal interaction is a necessary condition of the temporal ordering even of one’s own subjective states, and thus of coherent experience itself. In his Third Analogy—an examination of the necessary conditions of judgments of simultaneous existence—he argues (...) that certain conceptual presuppositions consistent with Newtonian physics are necessary to time-awareness. His argument, however, appears to be undermined by conventionalism in natural science generally, and by the conventionality of simultaneity in particular. In this paper I discuss Kant’s claims in light of contemporary relativity theory. I suggest that, while his project is obsolete in major respects, there may still be useful insights into time-awareness to be drawn from his work. (shrink)

The reply to Kanterian offers a rebuttal of his central criticisms. It reaffirms the difference between Kant's arguments in the Aesthetic and at B 148-9; it rejects the alleged error of logic in Fischer's (and my) arguments; and it rejects Kanterian's reading of passages in the Preface (A xx-xxii) and of the Amphiboly. Beyond these specific points Kanterian assumes that Kant's project in the first Critique cannot be understood as a and so begs the question at issue.

In a crucial passage of the second-edition Transcendental Deduction, Kant claims that the concept of motion is central to our understanding of change and temporal order. I show that this seemingly idle claim is really integral to the Deduction, understood as a replacement for Locke’s “physiological” epistemology (cf. A86-7/B119). Béatrice Longuenesse has shown that Kant’s notion of distinctively inner receptivity derives from Locke. To explain the a priori application of concepts such as succession to this mode of sensibility, Kant construes (...) the mind as receptive to its own activity. As Longuenesse understands Kant’s response to Locke, “motion” becomes little more than a metaphor for the action of understanding on inner sense. For Michael Friedman, in contrast, this passage evidences Kant’s deep concern with the foundations of Newtonian science. He reads it as a reference to inertial motion, the standard by which temporal intervals are measured. I show that Longuenesse’s and Friedman’s interpretations are in fact complementary. Both Locke and Kant are deeply concerned with the quantification of time. So Longuenesse is right that §24 is meant to supplant Locke’s account, and Friedman correctly takes it as the foundation of Kant’s account of the application of quantitative concepts to time. Kant aims, specifically, to explain cognition of time as continuous magnitude. However, Longuenesse leaves Kant without an answer to Locke’s challenge that continuous magnitude cannot be understood on the basis of discrete magnitude. And on Friedman’s view Kant’s account of the understanding’s activity presupposes, and thus cannot explain, the achievements of the mathematical sciences (such as the representation of temporal continuity). On my reading, Kant’s key contention is that we must regard the segregation of temporally ordered representation into units as the work of the understanding, rather than (as Locke views it) of sensibility. By giving the understanding this role, Kant succeeds where he takes Locke to fail. I show how the power to unify temporal representation can be ascribed to the understanding on the basis, not of assumed mathematical or scientific knowledge, but of its characterization as the power of judgment. (shrink)

In Newtonian physics, all phenomena take place in absolute space, which is a fixed scenario, and are referred to absolute time, which rules all processes. Motion is governed by a set of basic differential equations, and it is possible, at least in principle, to deduce future events from present initial conditions.

Trendelenburg argued that Kant's arguments in support of transcendental idealism ignored the possibility that space and time are both ideal and real. Recently, Graham Bird has claimed that Trendelenburg (unlike his contemporary Kuno Fischer) misrepresented Kant, confusing two senses of . I defend Trendelenburg's : the ideas of space and time, as a priori and necessary, are ideal, but this does not exclude their validity in the noumenal realm. This undermines transcendental idealism. Bird's attempt to show that the Analytic considers, (...) but rejects, the alternative fails: an epistemological reading makes Kant accept the alternative, while an ontological reading makes him incoherent. As I demonstrate, Trendelenburg acknowledged the ambiguity of , focusing on the transcendental, not the empirical sense. Unlike Fischer, Bird denies Kant's commitment to things-in-themselves in favour of a descriptivist, non-ontological reading of transcendental idealism as an inventory of . But neither Bird's descriptivism, nor Fischer's commitment to things-in-themselves, answers Trendelenburg's sceptical worry about transcendental idealism. (shrink)

Kant, in various parts of his treatment of causality, refers to determinism or the principle of sufficient reason as an inescapable principle. In fact, in the Second Analogy we find the elements to reconstruct a purely phenomenal determinism as a logical and tautological truth. I endeavour in this article to gather these elements into an organic theory of phenomenal causality and then show, in the third section, with a specific argument which I call the “paradox of phenomenal observation”, that this (...) phenomenal determinism is the only rational approach to causality because any logico-reductivistic approach, such as the Humean one, would destroy the temporal order and so the very possibility to talk of a causal relation. I also believe that, all things said, Kant did not achieve a much greater comprehension of the problem than Hume did, in his theory of causality, for he did not free a phenomenal approach from the impasse of reductivism as his reflections on “simultaneous causation” and “vanishing quantities” indeed show, and this I will argue in Sect. 4 of this article. (shrink)

According to Hume, the idea of a persisting, self-identical object, distinct from our impressions of it, and the idea of a duration of time, the mere passage of time without change, are mutually supporting "fictions". Each rests upon a "mistake", the commingling of "qualities of the imagination" or "impressions of reflection" with "external" impressions (perceptions), and, strictly speaking, we are conceptually and epistemically entitled to neither. Among Kant's aims in the First Critique is the securing of precisely these entitlements. Like (...) Hume, he acknowledges the correlativity of the notions of temporal duration and persisting self-identical objects (i.e., continuant substances). Unlike Hume, however, he undertakes to establish the legitimacy or objective validity of the schematized category of substance and, correspondingly, of the representation of time as a formal unity with duration as one of its modes. (shrink)

The thesis of this essay is that Kant's theory of the “forms of intuition” can be regarded as an account of the structure of our embodied perspective. The ideality and subjectivity of space is concluded to be an account of the perspective relative nature of the figure-ground relationship or how it is that objects emerge for us in empirical experience as being orientated in a spatio-temporal field. Time is regarded similarly as the event-series relationship. The significant role of embodiment in (...) Kant's thought on space and time is explored through a textual analysis of all of Kant's writings on the subject. By recovering the importance of the body to Kant's theoretical philosophy, the ontological implications of his theory of space and time and his idealism can be made more plausible. (shrink)

The essay centers on Gödel's views on the place of our intuitive concept of time in philosophy and in physics. It presents my interpretation of his work on the theory of relativity, his observations on the relationship between Einstein's theory and Kantian philosophy, as well as some of the scattered remarks in his conversations with me in the seventies — namely, those on the philosophies of Leibniz, Hegel and Husserl — as a successor of Kant — in relation to their (...) conceptions of time. (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)

This paper gives an interpretation of Kant's argument for transcendental idealism in the Transcendental Aesthetic. I argue against a common way of reading this argument, which sees Kant as arguing that substantive a priori claims about mind-independent reality would be unintelligible because we cannot explain the source of their justification. I argue that Kant's concern with how synthetic a priori propositions are possible is not a concern with the source of their justification, but with how they can have objects. I (...) argue that Kant's notion of intuition needs to be understood as a kind of representation which involves the presence to consciousness of the object it represents, and that this means that a priori intuition cannot present us with a mind-independent feature of reality. (shrink)

: Interpretations of Kant's transcendental idealism have been dominated by two extreme views: phenomenalist and merely epistemic readings. There are serious objections to both of these extremes, and the aim of this paper is to develop a middle ground between the two. In the Prolegomena, Kant suggests that his idealism about appearances can be understood in terms of an analogy with secondary qualities like color. Commentators have rejected this option because they have assumed that the analogy should be read in (...) terms of either a Lockean or a Berkelean account of qualities such as color, and have argued, rightly, that neither can provide the basis for a coherent interpretation of Kant's position. I argue that the account of color that the analogy requires is one within the context of a direct theory of perception, as opposed to Locke's representative account. Using this account of color, the secondary quality analogy enables us to explain how appearances can be mind-dependent without existing in the mind. (shrink)

This paper argues that there is an important respect in which Rae Langton's recent interpretation of Kant is correct: Kant's claim that we cannot know things in themselves should be understood as the claim that we cannot know the intrinsic nature of things. However, I dispute Langton's account of intrinsic properties, and therefore her version of what this claim amounts to. Langton's distinction between intrinsic, causally inert properties and causal powers is problematic, both as an interpretation of Kant, and as (...) an independent metaphysical position. I propose a different reading of the claim that we cannot know things intrinsically. I distinguish between two ways of knowing things: in terms of their effects on other things, and as they are apart from these. I argue that knowing things' powers is knowing things in terms of effects on other things, and therefore is not knowing them as they are in themselves, and that there are textual grounds for attributing this position to Kant. (shrink)

This paper compares Kant's transcendental idealism with three main groups of contemporary anti-realism, associated with Wittgenstein, Putnam, and Dummett, respectively. The kind of anti-realism associated with Wittgenstein has it that there is no deep sense in which our concepts are answerable to reality. Associated with Putnam is the rejection of four main ideas: theoryindependent reality, the idea of a uniquely true theory, a correspondence theory of truth, and bivalence. While there are superficial similarities between both views and Kant's, I find (...) more significant differences. Dummettian anti-realism, too, clearly differs from Kant's position: Kant believes in verification-transcendent reality, and transcendental idealism is not a theory of meaning or truth. However, I argue that part of the Dummettian position is extremely useful for understanding part of Kant's position - his idealism about the appearances of things. I argue that Kant's idealism about appearances can be expressed as the rejection of experiencetranscendent reality with respect to appearances. (shrink)

This landmark book is now reissued in a new edition that has been vastly rewritten and updated to respond to recent Kantian literature.

BRENTANO'S APPROPRIATION OF THE Scholastic notion of intentionality, and of what Brentano called "the intentional (or mental) inexistence of an object," was early on exploited in a reading of Kant's theory of objects and appearances. Apparently the first systematic attempt was undertaken by Hans Vaihinger. However, Vaihinger's is radically different from more recent intentionalist readings of Kant. Albeit not in every respect, I propose that a return to this aspect of Vaihinger's approach supports a rewarding advance on such readings. After (...) a general introduction, I survey three instances of the latter—Prauss, Pereboom, and Sellars—in section 2 (and comment on some others in notes throughout). In sections 3 and 4, I then turn to Vaihinger's approach. (shrink)

Full-text of this article is not available in this e-prints service. This article was originally published following peer-review in British Journal for the History of Philosophy, published by and copyright Routledge.

This review article responds to a biography of Fichte and a collection of essays on German Idealism stressing the plurality of types of idealism that were presented at the close of the 18th and the beginning of the 19th century.

The reply to Kanterian offers a rebuttal of his central criticisms. It reaffirms the difference between Kant's arguments in the Aesthetic and at B 148-9; it rejects the alleged error of logic in Fischer's (and my) arguments; and it rejects Kanterian's reading of passages in the Preface (A xx-xxii) and of the Amphiboly. Beyond these specific points Kanterian assumes that Kant's project in the first Critique cannot be understood as a and so begs the question at issue.

It is generally assumed that, during his early pre-critical phase, Kant accepted a Leibnizian account of freedom according to which we are free to do otherwise than we do even though our actions are determined. This assumption is false. Far from endorsing such an account, Kant explicitly argues in the "New Elucidation of the First Principle of Metaphysical Cognition" (1755) that there is no relevant sense in which we can do otherwise than we do. Nevertheless, he is equally convinced that (...) we are free and responsible for our actions. And so he concludes that we can be responsible for what we do even if we could not have done otherwise. Little attention, however, has been paid to this argument. This is unfortunate, since a better understanding of this stage in Kant’s theory of freedom would surely help us in understanding the later critical developments. (shrink)

In this paper I argue that Kant's distinction in the Inaugural Dissertation between the sensible and the intelligible arises in part out of certain open questions left open by his comparison between mathematics and metaphysics in the Prize Essay. This distinction provides a philosophical justification for his distinction between the respective methods of mathematics and metaphysics and his claim that mathematics admits of a greater degree of certainty. More generally, this illustrates the importance of Kant's reflections on mathematics for the (...) development of his Critical philosophy. (shrink)

In the first part of the paper I reconstruct Kant’s proof of the existence of a ‘most real being’ while also highlighting the theory of modality that motivates Kant’s departure from Leibniz’s version of the proof. I go on to argue that it is precisely this departure that makes the being that falls out of the pre-critical proof look more like Spinoza’s extended natura naturans than an independent, personal creator-God. In the critical period, Kant seems to think that transcendental idealism (...) allows him to avoid this conclusion, but in the last section of the paper I argue that there is still one important version of the Spinozistic threat that remains. (shrink)

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. -/- . (shrink)

This essay discusses recent attempts to show that Kant's philosophy is coherent and consistent on its own terms. This paper was read at the annual POH Symposium in Lake Wenatchee, WA in May, 2013.

In this work, the first overview of the German Idealism that is both conceptual and methodological, Paul W. Franks offers a philosophical reconstruction that is ...

[Sebastian Gardner] German idealism has been pictured as an unwarranted deviation from the central epistemological orientation of modern philosophy, and its close historical association with German romanticism is adduced in support of this verdict. This paper proposes an interpretation of German idealism which seeks to grant key importance to its connection with romanticism without thereby undermining its philosophical rationality. I suggest that the fundamental motivation of German idealism is axiological, and that its augment of Kant's idealism is intelligible in terms (...) of its combined aim of consolidating the transcendental turn and legitimating the kind of (objectual) relation to value articulated in German romanticism. /// [Paul Franks] German idealists regard Spinozism as both the realism that outflanks Kant's idealism and the source of the conception of systematicity with which to fortify idealism. But they offer little argument for this view. To fill the gap, I reconstruct arguments that could underlie Jacobi's and Pistorius's tentative but influential suggestions that Kant is or should be a Spinozist. Kant is indeed a monist about phenomena, but, unlike Spinoza, a pluralist about noumena. Nevertheless, it is arguable that the Third Antinomy can be solved by a more thoroughgoing Spinozistic monism. The resulting Spinozism outflanks Kant by acknowledging Jacobi's charge that philosophy annihilates immediacy and individuality, whereas Kant's commitment to things in themselves can seem a half-hearted attempt to avoid the charge. However, the German idealist contention is that only a synthesis of such a Spinozism with Kantian idealism can retrieve immediacy and individuality, thus overcoming nihilism. (shrink)

As most of its readers are aware, the Critique of Pure Reason is primarily concerned not with empirical, but with a priori knowledge. For the most part, the Kant of the first Critique tends to assume that experience, and the knowledge that is based on it, is unproblematic. The problem with which he is concerned is that of how we can be capable of substantive knowledge independently of experience. At the same time, however, the notion of experience plays a crucial (...) role in the central arguments of the Critique. For, again as most readers of the Critique know, Kant aims to show how we can have synthetic a priori knowledge by showing that the categories, or pure concepts of the understanding, are conditions of the possibility of experience. This means that, whether or not Kant is concerned with the notion of experience for its own sake, his account of a priori knowledge carries with it at least some commitments regarding the character of experience. If the account of a priori knowledge is to be successful, then experience has to be the kind of thing for which the categories can, in principle, serve as conditions of posibility. More specifically, experience must involve not only the senses, but also thought or understanding, for otherwise the claim that it presupposes a certain specific set of concepts is simply unintelligible. And indeed at least some parts of the Critique, in particular the so-called subjective deduction in the first edition, and the briefer passages which correspond to it in the second edition, seem to be intended to show how this requirement is met. That is, they are concerned not so much with showing that experience is governed by the categories, as with elaborating a view of experience as involving conceptual activity überhaupt. (shrink)

The role of transcendental idealism in Kant's theory of knowledge has been both deliberately underrated and inadvertently exaggerated. If conceivably not necessary, its role in Kant's explanation of the possibility of a priori knowledge in the Critique of Pure Reason is at least pivotal to the success of the explanation. On the other hand, though transcendental idealism depends on Kant's epistemological criterion of an existing object, or, simply, his criterion of existence, the criterion for its part is actually independent of (...) the idealism. In fact, it may be because this independence has hardly been recognized that commentators have been unaware of the role the criterion may actually be playing in the continuing controversy over the correct interpretation of the idealism. Altogether, this article addresses both shortcomings – the underestimation and the exaggeration of the role of the idealism in Kant's epistemology. While it places the idealism at the centre of the epistemology, it also separates the criterion of existence from the idealism. In highlighting this contrast, the article explains how the criterion may actually be contributing to the persistence of the ongoing dispute over the correct interpretation of the idealism. (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. CiteULike Connotea Del.icio.us Digg Reddit Technorati What's this? (shrink)

Immanuel Kant is one of Alain Badiou’s principle philosophical enemies. Kant’s critical philosophy is anathema to Badiou not only because of the latter’s openly aired hatred of the motif of finitude so omnipresent in post-Kantian European intellectual traditions—Badiou blames Kant for inventing this motif—but also because of its idealism. For Badiou-the-materialist, as for any serious philosophical materialist writing in Kant’s wake, transcendental idealism must be dismantled and overcome. In his most recent works (especially 2006’s Logiques des mondes), Badiou attempts to (...) invent a non-Kantian notion of the transcendental, a notion compatible with the basic tenets of materialism. However, from 1988’s Being and Event up through the present, Badiou’s oeuvre contains indications that he hasn’t managed fully to purge the traces of Kantian transcendental idealism that arguably continue to haunt his system—with these traces clustering around a concept Badiou christens “counting-for-one” (compter-pour-un). The result is that, in the end, Kant’s shadow still falls over Badiouian philosophy—this is despite Badiou’s admirable, sophisticated, and instructive attempts to step out from under it—thus calling into question this philosophy’s self-proclaimed status as materialist through and through. (shrink)

The debate on how to interpret Kant's transcendental idealism has been prominent for several decades now. In his book Kant's Transcendental Proof of Realism (2004) Kenneth R. Westphal introduces and defends his version of the metaphysical dual-aspect reading. But his real aim lies deeper: to provide a sound transcendental proof for (unqualified) realism, based on Kant's work, without resorting to transcendental idealism. In this sense his aim is similar to that of Peter F. Strawson – although Westphal's approach is far (...) more sophisticated. First he attempts to show that noumenal causation – on the reality of which his argument partly rests – is coherent in and necessary for Kant's transcendental idealism. Westphal then aims to undermine transcendental idealism by two major claims: Kant can neither account for transcendental affinity nor satisfactorily counter Hume's causal scepticism. Finally Westphal defends his alternative for transcendental idealism by showing that it solves these problems and thus offers a genuine transcendental proof for realism. In this paper I will show that all the three steps outlined above suffer from decisive shortcomings, and that consequently, regardless of its merits, Westphal's transcendental argument for realism remains undemonstrated. (shrink)

Trendelenburg argued that Kant's arguments in support of transcendental idealism ignored the possibility that space and time are both ideal and real. Recently, Graham Bird has claimed that Trendelenburg (unlike his contemporary Kuno Fischer) misrepresented Kant, confusing two senses of . I defend Trendelenburg's : the ideas of space and time, as a priori and necessary, are ideal, but this does not exclude their validity in the noumenal realm. This undermines transcendental idealism. Bird's attempt to show that the Analytic considers, (...) but rejects, the alternative fails: an epistemological reading makes Kant accept the alternative, while an ontological reading makes him incoherent. As I demonstrate, Trendelenburg acknowledged the ambiguity of , focusing on the transcendental, not the empirical sense. Unlike Fischer, Bird denies Kant's commitment to things-in-themselves in favour of a descriptivist, non-ontological reading of transcendental idealism as an inventory of . But neither Bird's descriptivism, nor Fischer's commitment to things-in-themselves, answers Trendelenburg's sceptical worry about transcendental idealism. (shrink)

Kant argued that we have no knowledge of things in themselves, no knowledge of the intrinsic properties of things, a thesis that is not idealism but epistemic humility. David Lewis agrees (in 'Ramseyan Humility'), but for Ramseyan reasons rather than Kantian. I compare the doctrines of Ramseyan and Kantian humility, and argue that Lewis's contextualist strategy for rescuing knowledge from the sceptic (proposed elsewhere) should also rescue knowledge of things in themselves. The rescue would not be complete: for knowledge of (...) things in themselves would remain elusive. (shrink)

This paper takes a fresh look at a classical theme in philosophical scholarship, the meaning of transcendental idealism, by contrasting Kant's and Husserl's versions of it. I present Kant's transcendental idealism as a theory distinguishing between the world as in-itself and as given to the experiencing human being. This reconstruction provides the backdrop for Husserl's transcendental phenomenology as a brand of transcendental idealism expanding on Kant: through the phenomenological reduction Husserl universalizes Kant's transcendental philosophy to an eidetic science of subjectivity. (...) He thereby furnishes a new sense of transcendental philosophy, rephrases the quid iuris-question, and provides a new conception of the thing-in-itself. What needs to be clarified is not exclusively the possibility of a priori cognition but, to start at a much lower level, the validity of objects that give themselves in experience. The thing-in-itself is not an unknowable object, but the idea of the object in all possible appearances experienced at once. In spite of these changes Husserl remains committed to the basic sense of Kant's Copernican Turn. I end with some comments on how both Kant and Husserl view the relation between theoretical and moral philosophy. (shrink)

Kant's transcendental idealism hinges on a distinction between appearances and things in themselves. The debate about how to understand this distinction has largely ignored the way that Kant applies this distinction to the self. I argue that this is a mistake, and that Kant's acceptance of a single, unified self in both his theoretical and practical philosophy causes serious problems for the 'two-world' interpretation of his idealism.

The one-world interpretation of Kant's idealism holds that appearances and things in themselves are, in some sense, the same things. Yet this reading faces a number of problems, all arising from the different features Kant seems to assign to appearances and things in themselves. I propose a new way of understanding the appearance/thing in itself distinction via an Aristotelian notion that I call, following Kit Fine, a ‘qua-object.’ Understanding appearances and things in themselves as qua-objects provides a clear sense in (...) which they can be the same things while differing in many of their features. (shrink)

The Appendix to the Transcendental Dialectic of Kant's first Critique is notorious for two reasons. First, it appears to contradict itself in saying that the idea of the systematic unity of nature is and is not transcendental. Second, in the passages in which Kant appears to espouse the former alternative, he appears to be making a significant amendment to his account of the conditions of the possibility of experience in the Transcendental Analytic. I propose a solution to both of these (...) difficulties. With regard to the first, I argue that Kant does not contradict himself. With regard to the second, I argue that Kant is not making any change to his view of the conditions of the possibility of experience espoused in the Transcendental Analytic. The underlying cause of these apparent problems is also their solution: the transcendental illusion that nature is necessarily systematic. (shrink)