Abstract

This dissertation aims at forging an archetectonic link between Kant's first and third Critiques within a cognitive-semantic framework. My aim is to show how the major conceptual innovations of Kant’s third Critique can be plausibly understood in terms of the theoretical aims of the first, (Critique of Pure Reason). However, unlike other cognition-oriented approaches to Kant's third Critique, which take the point of contact between the first and third Critique's to be the first Critique's Transcendental Analytic, I link these two works via the first Critique's Transcendental Dialectic, specifically its discussions of the "ideas of pure reason." According to Kant, the “ideas of pure reason” (IPRs) — viz., the notions of self, world-whole, and God — are innate content-bearing entities representing three types of transempirical object, none of which are possible objects of cognition. However, although Kant denies that these rather unique content-bearers can be used for purposes of “speculative cognition,” he does think that they have an internal functional value for human cognitive systems. Although under my analysis of their functional value the IPRs subserve a highest-order aim which derives from theoretical reason — namely, to ground and optimize cognitive systematicity — their directive content in fact renders their implementation(thus their form of intentionality) more characteristic of practical reason. Kant’s positive account of reason’s “interest” in and use of the IPRs exhibits a kind of cognitive pragmatism. Of utmost concern to the cognitive-semantic enterprise, as I conceive it, is the development of (what might be called) a metaphysics of intentionality. A `metaphysics of intentionality', as I use the term, refers to a coherent set of postulative propositional cognitions (or, at any rate, content-bearing entities) implemented, first, for the sake of rationally explaining the phenomenological unity and object-directed character of our perceptual states and, second, to explain why the objects represented in such states are, or must be, law-governed and thus necessarily amenable to scientific investigation. On my view, the discussions in Kant’s third Critique nontrivially contribute to the development of a metaphysics of intentionality and thus to the larger cognitive-semantic enterprise of Kant's first Critique, and it is this link that lends Kant's third Critique a cognitive significance.