This article reviews the transition between post-Fregean anti-naturalistic epistemology and contemporary naturalistic epistemologies. It traces the revival of naturalism to Quine’s critique of the "a priori", and Kuhn’s defense of historicism, and use the arguments of Quine and Kuhn to identify a position, "traditional naturalism", that combines naturalistic themes with the claim that epistemology is a normative enterprise. Pleas for more radical versions of naturalism are articulated, and briefly confronted.

It is argued that reliance on the testimony of others cannot be viewed as reliance on a kind of evidence. Speech being essentially voluntary, the speaker cannot see his own choice of words as evidence of their truth, and so cannot honestly offer them to others as such. Rather, in taking responsibility for the truth of what he says, the speaker offers a guarantee or assurance of its truth, and in believing him the hearer accepts this assurance. I argue that, (...) contrary to appearances, this account is compatible with the hearer acquiring knowledge, and in fact throws interesting light on the idea of knowledge. -/- . (shrink)

The reliability of a belief-producing process is a matter of how likely it is that the process will produce beliefs that are true. The term reliabilism may be used to refer to any position that makes this idea of reliability central to the explication of some important epistemic concept. I know of three such positions that appeal to some epistemologists: a reliabilist account of what makes a belief justified, a reliabilist account of what makes a true belief knowledge, and a (...) reliabilist answer to the question of the fourth condition, the question of what must be added to justified true belief to make knowledge. Obviously these are alternative positions rather than parts of a single coherent whole. I think of the first as reliabilism’s boldest stand, the second as the position to which it may retreat when the first is found untenable, and the third as its last refuge. I will criticize only the first two positions. (shrink)

Skepticism has been (and remains) a central concern of the theory of knowledge. Indeed, some philosophers think that, without the problem of skepticism, we would not know what to make of the idea of distinctively philosophical theories of knowledge. However, a philosopher who thinks along these lines is likely to have in mind a rather special form of skepticism. Let us call it philosophical skepticism. Philosophical skepticism has a long history. Indeed, it is almost coeval with systematic philosophy itself.

Epistemological foundationalism is best conceived as a thesis about the structure of a body of knowledge. Although its major proponents have been non-skeptics, the thesis may be construed as neutral with respect to skepticism. A modest version of epistemological foundationalism so construed might be formulated as the view that necessarily, if one has any knowledge, one has some direct knowledge, i.e., knowledge not based on other knowledge or beliefs one has, and any further knowledge one has is at least in (...) part based on one’s direct knowledge. Now suppose we make four plausible assumptions which most foundationalists would accept: each of us has knowledge, knowing entails believing, we each have at least some direct knowledge constituted by beliefs not based on other beliefs of ours, and if a person has direct knowledge on which other knowledge is based, at least some of the beliefs constituting the former are not based on other beliefs of his. Given -, epistemological foundationalism apparently entails some form of what I shall call psychological foundationalism. In its simplest form, this is the view that the structure of a person’s body of beliefs is foundational in the strong sense that some of his beliefs are not based on others, and any other beliefs he has are based on the former. (shrink)