cited works by ernest sosa xi I would like to thank Ernest Sosa and all of our contributors for their participation in the project. Thanks also to Ernest LePore, the editor of the series, and to Daniel Breyer, who was a great help with...
morecited works by ernest sosa xi I would like to thank Ernest Sosa and all of our contributors for their participation in the project. Thanks also to Ernest LePore, the editor of the series, and to Daniel Breyer, who was a great help with various aspects of the book, including the index. It has been a pleasure working with such an outstanding group of philosophers. Volumes such as this one are always a kind of tribute to the philosopher under discussion-it goes without saying that not everyone's work merits or receives this sort of attention. This volume turned out to be a tribute to Ernest Sosa the person, as well. I say this on the basis of the wonderful response by our contributors. I can't imagine that it has ever been so easy to bring together such an outstanding group of philosophers, so eager to participate in the project and so generous in their efforts. This has been a great celebration of Ernie and his work. preface xiii introduction xv Introduction: Motivations for Sosa's Epistemology Over the last four decades, Ernest Sosa has defended a complex and penetrating theory of knowledge-one that has consequences for every important issue raised in recent epistemology, and for many related issues as well. The essays in this volume, for example, address Sosa's positions regarding the nature of knowledge, internalism and externalism about justification, skepticism, foundationalism and coherentism, and the nature of intellectual virtue, but also his positions regarding realism, internalism and externalism about mental states, and the nature of reference. I will not try to summarize Sosa's views here, or to otherwise give them adequate treatment. This I leave to the volume's capable contributors, who provide both useful summaries and critical discussions of many aspects of Sosa's work in their essays. Rather, in this introduction I will reconstruct what, it seems to me, are some of the most important arguments motivating Sosa's general position in epistemology. I take this general position to be "externalist," in that it makes positive epistemic status depend on factors relevantly external to the knower. Furthermore, Sosa's general view is correctly characterized as a virtue theory, in that it adopts a distinctive direction of analysis. Specifically, it defines the evaluative properties of beliefs in terms of the evaluative properties (or virtues) of believers. Finally, Sosa's view places central importance on the notion of an epistemic perspective, where this is understood as a set of second-order beliefs about one's first-order beliefs and the reliability of their sources. Hence the label "virtue perspectivism" for Sosa's view. 1 Three Options in Epistemology It is fair to say that Sosa sees three broad options available in epistemology-not in the sense that these are the only ones logically possible, but in the sense that these are the ones deemed most plausible by those, past and present, who have thought carefully about relevant matters. The options are these: Classical foundationalism. The central idea is that one knows only what is obvious and what can be deductively proved from the obvious. Descartes's rationalism is an example, xvi introduction since "he concludes that we know only what we intuit or deduce: that our acceptance of a true proposition can have the epistemic justification (authority, warrant, status, call it what you will) required for knowledge only if it is either itself a rational intuition or the outcome of a logical deduction from nothing but rational intuitions as ultimate premises." 1 Hume's theory also counts, however, since he accepts as knowledge only what can be proved "on the basis of what is obvious at any given moment through reason or experience" (KP, 166-7). Coherentism. The coherentist rejects the idea of foundational knowledge, or knowledge that is not dependent on further knowledge for its evidence. The central idea is that all knowledge (justified belief, warranted belief) depends on further beliefs for its status as such. More specifically, a belief qualifies as knowledge in virtue of its membership in a sufficiently coherent and comprehensive system of beliefs. Reliabilism. A belief qualifies as knowledge (justified, warranted) in virtue of its deriving from a reliable (truth-conducive) process. Since some reliable processes depend on further beliefs for their inputs and some do not, there is no bar in principle to foundational knowledge. In fact, reliabilism is best understood as a kind of foundationalism. "Every bit of knowledge still lies atop a pyramid of knowledge. But the building requirements for pyramids are now less stringent. A belief may now join the base not only through perfectly reliable rational intuition but also through introspection, perception, or memory. And one may now erect a superstructure on such a basis not only by deduction but also by induction, both enumerative and hypothetical or explanatory" (KP, 89). Sosa levels several objections against the first two options, some of them quite traditional. For example, classical foundationalism is criticized for allowing too narrow a foundation to preserve the bulk of ordinary knowledge, and coherentism is criticized for failing to assign a proper role to experience in the justification of belief. Such objections can be both powerful and instructive, especially in the versions that Sosa formulates. I will ignore these here, however, and instead focus on a different series of objections raised by Sosa. These latter are aimed not so much at technical flaws or theoretical lacunae, but at the very motivations for the two positions. Properly understood, I believe, these objections help us to recognize, and to some extent reconceive, what is at issue in the dispute among competing options in epistemology. 2 Against the Argumentative Account of Justification Standing behind various arguments for coherentism, and behind various objections to foundationalism, is what Sosa calls the "argumentative account of justification" (KP, 253). According to Donald Davidson, "What distinguishes a coherence theory is simply the claim that nothing can count as a reason for holding a belief except another belief. Its partisan rejects as unintelligible the request for a ground or source of justification of another ilk." 2 According to Richard Rorty, "nothing counts as justification unless by reference to what we already accept, and there is no way to get outside our beliefs and our language so as to find some test other than coherence." 3 Such reasoning at once makes foundational beliefs absurd and coherentism the only live option in sight. Right introduction xvii behind such reasoning, Sosa suggests, is the following argumentative conception of justification (AJ): (a) that for a belief to be justified is for the believer to justify it or to have justified it; and (b) that for one to justify a belief (really, successfully) is for one correctly and seriously to use considerations or reasons in its favor. But why accept (AJ)? Of course one can point to common usage, and insist that to justify is to bring reasons in favor. And if that does not work, one can simply stipulate accordingly. However, Sosa points out, neither of these strategies will give the coherentist what he wants. For in that case it remains possible that some knowledge is not justified, and so nothing so far counts against foundationalism or in favor of coherentism. The substantive issue is raised again by talking about epistemic authority (or warrant, or aptness), and by asking whether all epistemic authority requires argumentative justification. Moreover, Sosa argues, the argumentative account is in trouble as an account of epistemic authority in general. For to "correctly" use reasons in favor is surely to use justified reasons in favor, and in that case we are faced with a vicious regress. If a belief is knowledge only by being justified, and if being justified requires being based on further justified reasons, then there will be no end to the process of justifying. A natural response by the coherentist is to say that justification ends in coherence: that ultimately a belief is justified not by further reasons brought in its favor, but by its membership in a coherent system of reasons. An alternative response is to say that justification ends with what our peers let us say: that ultimately a belief is justified because it meets the standards that society plus context fix in place. But either response gives up the argumentative account of justification, and the idea that epistemic authority is always won by virtue of giving reasons. On the contrary, each response specifies an alternative basis for justification (coherence or social standards), and in doing so enters into a dispute with the foundationalist on equal footing. In other words, each response claims that something else, not justified reasons, is the ultimate source of epistemic authority. xviii introduction Suppose S and TwinS live lives indistinguishable physically or psychologically, indistinguishable both intrinsically and contextually, on Earth and Twin-Earth respectively. Surely there can then be no belief of S epistemically justified without a matching belief held by TwinS with equal epistemic justification. Epistemic justification must accordingly supervene upon or derive from physical or psychological properties of the subject of belief, properties either intrinsic or contextual. (KP, 110) An important aim of epistemology, Sosa reasons, is to specify the non-evaluative basis of supervenience, thus allowing a special sort of insight into the nature of justification and knowledge. In this respect, coherentists and foundationalists share a common goal: to specify such a basis in relatively simple and complete terms. It is from this perspective that the argumentative account of justification seems clearly hopeless. According to (AJ), for one to justify a belief is for one "correctly and...