Ernest Sosa

A main epistemic problematic, found already in Aristotle’s Posterior Analytics, presents a threefold choice on how a belief may be justified: either through infinitely regressive reasoning, or through circular reasoning, or through reasoning resting ultimately on some foundation. Aristotle himself apparently takes the foundationalist option when he argues that rational intuition is a foundational source of scientific knowledge. The five modes of Agrippa, which pertain to knowledge generally, again pose the same problematic, the “Pyrrhonian” problematic. And here Galen and the Stoics also opt for foundations. Sections I and II below explore that foundationalist option. Section III draws some lessons. And Section IV uses these to interpret Descartes. I argue that Descartes shows us the way beyond the Pyrrhonian problematic, although his way is not that traditionally attributed to him. On these basic issues of epistemology, Descartes is no Cartesian.

Life may turn sour and, in extremis, not worth living. On occasion it may be best, moreover, to lay down one's life for a greater cause. None of this is any news, debatable though it may remain, in general or case by case. Now comes the news that life does not matter in the way we had thought. No resurgence of existentialism, nor tidings from some ancient religion or some new cult, the news derives from the most sober and probing philosophical argument (the extraor- dinary Parfit, 1984, Part III), and takes more precisely the following form: Even though life L is optimal (in all dimensions), and even though if it were extended L would continue to be optimal, it does not follow that it is best to extend it, even for the subject whose life L is. What is the argument? Section II will defend a certain view of the nature of persons and personal identity, and Section III will then argue for the Paradox on that basis, and reflect on its philosophical implications and on the options it presents.

According to nomological accounts of causation causal connections among events or states must be mediated by contingent laws of nature. Three types of causal connection are cited and discussed in opposition to such nomological accounts: (a) material causation (as when a zygote is generated by the union of an ovum and a sperm); (b) consequentialist causation (as when an apple is chromatically colored as a result of being red); (c) inclusive causation (as when a board is on a stump in consequence of its having been placed there by a carpenter). These are all source-consequence relations or result-yielding relations and they are all cases of necessitation, each with its own distinguishing features.

The received definition of knowledge (as true, evident belief) has recently been questioned by Edmund Gettier with an example whose principle is as follows. A proposition, p, is both evident to and accepted by someone S, who sees that its truth entails (would entail) (that either p is true or q is true). This last is thereby made evident to him, and he accepts it, but it happens to be true only because q is true, since p is in fact false. Hence, inasmuch as he has no evidence for the proposition q, S can hardly be said to know (that either p is true or q is true). Here then is a formula for true, evident beliefs that are not cases of knowledge. I discuss the possibility of adding a fourth condition to this triad.

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Truth centered epistemology puts truth at the center in more ways than one. For one thing, it makes truth a main cognitive goal of inquiry. For another, it explains other main epistemic concepts in terms of truth. Knowledge itself, for example, is explained as belief that meets certain other conditions, among them being true. And a belief is said to be rationally or epistemically justified or apt, which it must be in order to be knowledge, only if it derives from a truth-conducive faculty, an intellectual virtue. What defensible theories of truth are open to such truth-centered epistemology? That is our main question.

Polyfacetic epistemology would answer the skeptic, provide how-to-think manuals, explain how we know, and more. To some it is the project of assuring oneself, of validating one's knowledge or supposed knowledge, turning it into real and assured knowledge, thus defeating the skeptic. To others it is a set of rules or instructions, a guide to the perplexed, a manual for conducting the intellect. To others yet it is a meta-discipline, but one whose purpose is not nearly so much guidance as understanding, understanding of what gives us the knowledge we do have, of what factors serve to justify so many of our beliefs well enough to make them knowledge. What follows is epistemology as understanding, an attempt to understand the relation between epistemic coherence and intellectual virtue at the foundation of epistemology: between the comprehensive coherence prized in the thirst for understanding and the "reliability" that makes a faculty or procedure intellectually virtuous.

Survey results are in the first instance utterances, which require interpretation. Moreover, when the results seem to involve disagreement in intuitive responses to a thought experiment, the results are most directly responsive to the scenario as envisaged by the particular subject, where the text of the example can give rise to relevantly different scenarios, depending on how the scenario is shaped by the subjects involved, under the guidance of the text. All of this opens up a defense of intuitions against results that ostensibly imply extensive intuitive disagreement based on cultural or socio-economic background. Critics of the armchair have replied to this defense in recent publications. This paper takes up some of those replies