This paper reconstructs and defends Kant's argument for the transcendental status of reason's principles of the systematic unity of nature in the Appendix to the Transcendental Dialectic. On the present account, these principles are neither mere methodological recommendations for conducting scientific inquiry nor do they have the normative force of categorical imperatives, two extant interpretations of Kant's discussion of reason in the Appendix. Instead, they are regulative yet transcendental principles restricted to theoretical cognition. The principles of the systematic unity of (...) nature count as transcendental in virtue of their role as conditions of the inferential articulation of empirical concepts. (shrink)

This dissertation investigates the origin, intellectual development and use of a semantic variant of the idea of logical space found implicitly in Kant and explicitly in early Wittgenstein and van Fraassen. It elucidates the idea of logical space as the idea of images or pictures representative of reality organized into a logico-mathematical structure circumscribing a form of all possible worlds. Its main claim is that application of these images or pictures to reality is through a certain conception of self. The (...) first chapter presents a novel interpretation of Kant’s semantic theory of schemata in the Critique of Pure Reason, showing that a structure of the imagination induced by the transcendental self informs an implicit idea of logical space. The second chapter offers an intellectual history of the idea through developments in the organization of images introduced by Helmholtz and Hertz. The third chapter reveals early Wittgenstein’s idea of logical space to be his notion of the self, demonstrating how this serves to unify propositions of the Tractatus Logico-Philosophicus concerning solipsism, realism, ethics, aesthetics and mysticism with those pertaining to the picture theory of meaning. The fourth chapter provides a historical overview of the development of van Fraassen’s empiricism in relation to his adaptation of logical space, and evaluates his recent proposal in Scientific Representation: Paradoxes of Perspective that the problem of coordination in the semantic view of theories is dissolved through self-location in logical space. After identifying a number of problems this proposal creates for his empiricism, a brief suggestion is made about how van Fraassen might improve upon his conception of logical space, and how an empiricist view of scientific representation might be understood as a result. (shrink)

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. (shrink)

In a crucial paragraph (KrV, A 663-664 / B 691-692) of the first part of the “Appendix to the Transcendental Dialectic”, Kant discusses the specific status of the principles of homogeneity, specification, and continuity. In doing so, he refers to an already proven argument and thus to other passages of the Critique of Pure Reason. In search of this argument the “Transcendental Analytic” but in particular the “first book” of the “Transcendental Dialectic” turn out to be possible reference points. Although (...) this contextualisation demands further systematic and editorial reflections, it also allows the clarification of the status of the principles and their justification in relation to a subjective deduction. Kant offers with the subjective deduction, as introduced in the “Preface” (of the first edition of the Critique of Pure Reason) and again in the “first book” of the “Transcendental Dialectic”, a first argumentative strategy, which differs from the objective one but provides “some objective validity” (KrV, A 664 / B 692; Kant, 1998, p. 602) and therefore has systematic importance for the principles of homogeneity, specification, and continuity. My aim is to offer immanent strategies for a justification of the principles of homogeneity, specification, and continuity in the framework of the Critique of Pure Reason. (shrink)