Famously, Kant is a transcendental idealist. Yet he also endorses empirical realism, and even boasts that only the transcendental idealist can be an empirical realist. The difficulty of making sense of those commitments together leads many interpreters to begin by attributing to Kant some variant of conventional, subjective idealism. That in turn requires that Kant's empirical realism be at best a merely ersatz or quasi-realism. But that drains Kant's boast of its significance. For any idealist can be a realist if (...) the 'realism' in question is defined in terms of a prior commitment to idealism. Thus I argue, on the contrary, that we must begin the interpretation of Kant's Critical philosophy by taking his empirical realism to be a genuine, common-sense realism about empirical things. That approach yields a consistent, satisfying, and novel reading of the Critical enterprise, including transcendental idealism, as explaining how empirical realism is possible. Along the way I show, among other things, (1) how to make systematic sense of Kant's controversial theory of meaning, which is standardly either downplayed or regarded as grossly inconsistent with his other core commitments; (2) how to dispense with the centuries-old Neglected Alternative objection; and (3) how to account for the syntheticity of the moral law and its role in conferring experience-immanent meaning on the practical postulates (e.g., of the existence of God). (shrink)

One of the important challenges in the philosophy of mathematics is to account for the semantics of sentences that express mathematical propositions while simultaneously explaining our access to their contents. This is Benacerraf’s Dilemma. In this dissertation, I argue that cognitive science furnishes new tools by means of which we can make progress on this problem. The foundation of the solution, I argue, must be an ontologically realist, albeit non-platonist, conception of mathematical reality. The semantic portion of the problem can (...) be addressed by accepting a Chomskyan conception of natural languages and a matching internalist, mentalist and nativist view of semantics. A helpful perspective on the epistemic aspect of the puzzle can be gained by translating Kurt G ̈odel’s neo-Kantian conception of the nature of mathematics and its objects into modern, cognitive terms. (shrink)

According to David Chalmers, the hard problem of consciousness consists of explaining how and why qualitative experience arises from physical states. Moreover, Chalmers argues that materialist and reductive explanations of mentality are incapable of addressing the hard problem. In this chapter, I suggest that Chalmers’ hard problem can be usefully distinguished into a ‘how question’ and ‘why question,’ and I argue that evolutionary biology has the resources to address the question of why qualitative experience arises from brain states. From this (...) perspective, I discuss the different kinds of evolutionary explanations (e.g., adaptationist, exaptationist, spandrel) that can explain the origins of the qualitative aspects of various conscious states. This argument is intended to clarify which parts of Chalmers’ hard problem are amenable to scientific analysis. (shrink)