Can a scientific naturalist be a mathematical realist? I review some arguments, derived largely from the writings of Penelope Maddy, for a negative answer. The rejoinder from the realist side is that the irrealist cannot explain, as well as the realist can, why a naturalist should grant the mathematician the degree of methodological autonomy that the irrealist's own arguments require. Thus a naturalist, as such, has at least as much reason to embrace mathematical realism as to embrace irrealism.

Having suggested that a salient feature of philosophical naturalism is to deny that there are non‐natural norms, I make a distinction between a moderate naturalism, which admits the existence of natural norms, and a radical naturalism which denies it. On the assumption that intentional facts are irreducibly normative, their existence would thus seem to raise a problem for moderate epistemological naturalism. I argue that no non‐trivial naturalistic explanation of conceptual intentionality is to be possible unless it is denied that norms (...) of rationality are constitutive of intentional content. It follows that the only form of intentional naturalism that is not obviously untenable has to be radical. Other aspects of Quine's doctrine suggest that the introduction of epistemic norms into our “system of the world” is either dubiously coherent, or “merely programmatic”. (shrink)

Having suggested that a salient feature of philosophical naturalism is to deny that there are non‐natural norms, I make a distinction between a moderate naturalism, which admits the existence of natural norms , and a radical naturalism which denies it . On the assumption that intentional facts are irreducibly normative, their existence would thus seem to raise a problem for moderate epistemological naturalism. I argue that no non‐trivial naturalistic explanation of conceptual intentionality is to be possible unless it is denied (...) that norms of rationality are constitutive of intentional content. It follows that the only form of intentional naturalism that is not obviously untenable has to be radical. Other aspects of Quine's doctrine suggest that the introduction of epistemic norms into our “system of the world” is either dubiously coherent, or “merely programmatic”. (shrink)

There are many things that philosophy of biology might be. But, given the existence of a professional philosophy of biology that is arguably a progressive research program and, as such, unrivaled, it makes sense to define philosophy of biology more narrowly than the totality of intersecting concerns biologists and philosophers (let alone other scholars) might have. The reasons for the success of the “new” philosophy of biology remain poorly understood. I reflect on what Dutch and Flemish, and, more generally, European (...) philosophers of biology could do to improve the situation of their discipline locally, regionally, and internationally, paying particular attention to the lessons to be learned from the “Science Wars.”. (shrink)

I shall examine Quine’s conception of logic, of propositional attitudes, and of the unity of knowledge in order to show that there are some tensions in Quine’s system. I first propose a conception of the use or application of logic, stating that logic strictly speaking applies to intentional phenomena or to things that presuppose the existence of intentional phenomena. Then, I consider briefly Quine’s philosophy of logic and discuss some issues. In Quine’s philosophy, logic stays at the very center of (...) the web of our beliefs; it is central in science and ordinary knowledge as well. Then I examine Quine’s tendency to “quine” the mental, given his own maxim of minimum mutilation. Finally, I consider Quine’s thesis of the unity of knowledge, the thesis that there is continuity from ordinary to scientific knowledge. If I am right about the use of logic and the presence of the propositional attitude idiom in ordinary knowledge and social sciences and humanities, I think there is a problem of consistency in Quine’s system, and that Quine himself pointed to a part of the solution. (shrink)