Jonathan L. Kvanvig

The heart of the epistemological interest of Zagzebski’s book is found in the tasks of clarifying the natures of justification and knowledge in terms of the intellectual virtues. It is in virtue of undertaking this task that Zagzebski presents a version of virtue epistemology. Though the book has several interesting features apart from this task, I want to argue that in its fundamental tasks, the book is a failure. In particular, I will argue that Zagzebski’s virtue account of justification is irreparably inadequate

IN COMPARISON with other doctrines Cthe doctrine of omnipotence, for example Cthe proper formulation of the doctrine of omniscience has not seemed especially problematic. Once we accept the contemporary wisdom that knowledge is knowledge of truths, the formulation of the traditional doctrine seems straightforward: to be omniscient is just to know all truths. What has seemed problematic, rather, is whether the doctrine is itself true. In particular, many have wondered whether anyone can know the parts of the future not necessitated in any way by the present or past.

In recent years, epistemologists have become increasingly impressed with reliabilist theories of justification. 1 Reliabilism is often formulated as the claim that a belief is justified 2 just in case it is a reliable belief; however, this formulation can be somewhat misleading. There is a sense in which a set of beliefs can be reliable, just as a certain history or testimony can be reliable: what one means is that a certain set of propositions is highly accurate, has mostly true members, or is not wrong in any important way. Reliabilists, though, do not just want to say that a belief is justified just in case it is a member of a type with mostly true members, i.e., just in case it is probably true; they also want to appeal to the notion of reliability in that sense in which we say that persons, processes, proce­dures, tests, and experiments are reliable. Reliabilism is a view both about the reliability of beliefs and about the reliability of the person who has the belief or the procedure that is responsible for the belief.

I came to epistemology through an interest in the concept of rationality, and especially through the attacks on the rationality of religious believers. My thoughts at the time focused on the disappointing quality of the arguments for and against religious belief, and I recall being astonished at the time that philosophers capable of such penetrating insight in other areas had nothing that seemed either penetrating or original. The defenders sounded too much like mere apologists for the faith, and the attackers arid and dull, with both sides often exuding a scent of intellectual dishonesty.

THE DOCTRINE OF omniscience has been understood in two ways. Roughly, it has been taken either as the claim that God knows all that is true (Geach, Kvanvig 1986) or as the claim that God knows all that can be known (Swinbume; Mavrodes). The first construal I shall call the traditional construal, and the second I shall call a limited construal. Though the traditional construal would seem to be the natural one to hold, considerations of the analogy between the best construals of the doctrine of omnipotence have suggested to some that a limited construal is prefera)1e. In particular, some have claimed that one should be careful to construe the doctrine of omnipotence, not as the..

Alvin Plantinga thinks Leibniz made a mistake. Leibniz claimed that God could have created any possible world, but Plantinga thinks this view amounts to a lapse in judgment on Leibniz =s part. = Plantinga terms this mistake ALeibniz= Lapse,@ and his rejection of this Leibuizian claim plays an important role in Plantinga =s free wili defense against the problem of evil. I will argue that Plantinga fails to show that Leibniz lapsed in thinking about which worlds are actualizable by God; in particular, his argument for this claim is not sound. If I am right, the last lapse is on Plantinga