In this paper I will offer a novel understanding of a priori knowledge. My claim is that the sharp distinction that is usually made between a priori and a posteriori knowledge is groundless. It will be argued that a plausible understanding of a priori and a posteriori knowledge has to acknowledge that they are in a constant bootstrapping relationship. It is also crucial that we distinguish between a priori propositions that hold in the actual world and merely possible, non-actual a (...) priori propositions, as we will see when considering cases like Euclidean geometry. Furthermore, contrary to what Kripke seems to suggest, a priori knowledge is intimately connected with metaphysical modality, indeed, grounded in it. The task of a priori reasoning, according to this account, is to delimit the space of metaphysically possible worlds in order for us to be able to determine what is actual. (shrink)

This paper discusses Plato’s question from the Meno : Why should we prefer knowledge that p over mere true belief that p? I find I just do prefer knowledge, and not for any further benefit that I am aware of in the particular case. But I should have that preference, because given our practice of approving of testimony only if uttered with knowledge, I could fail to prefer knowledge, when other things seem to me to be equal, only by having (...) the sorts of serious social or psychological defects that would make me unresponsive to the approval of others. Finally, the social practice that produces this particular preference is good for all of us because it improves the average quality of the testimony we receive, which results in greater success in our projects. (shrink)

forthcoming in Philosophy Compass. This is a paper which aims both to survey the field and do some work at its cutting edge.