Robert Pasnau

When objects are illuminated, the light they reflect does not simply bounce off their surface. Rather, that light is entirely reabsorbed and then reemitted, as the result of a complex microphysical event near the surface of the object. If we are to be physicalists regarding color, then we should analyze colors in terms of that event, just as we analyze heat in terms of molecular motion, and sound in terms of vibrations. On this account, colors are not standing properties of objects, but events, or (more cautiously) properties associated with events. Accordingly, objects in the dark are no more colored than a turned-off stove is hot. Such an account requires rejecting some of what folk ordinarily say about color, but this is the most coherent version of color physicalism.

Reflection on the history of skepticism shows that philosophers have often conjoined as a single doctrine various theses that are best kept apart. Some of these theses are incredible – literally almost impossible to accept – whereas others seem quite plausible, and even verging on the platitudinous. Mixing them together, one arrives at a view – skepticism – that is as a whole indefensible. My aim is to pull these different elements apart, and to focus on one particular strand of skepticism that deserves sustained and respectful attention. The strand I have in mind I will refer to as epistemic defeatism. Roughly, in its most global form, it is the view that, in the final analysis, we have no good evidence for the truth of any proposition. Working through various historical texts, I attempt to untangle epistemic defeatism from neighboring views, and in particular to establish its independence from questions about knowledge. Having thus established the view's autonomy, I turn to the options for self-consciously accepting defeat. One may despair or one may have faith. But I will ultimately propose that the most attractive option – the option that preserves the most of our epistemic integrity – is to have hope.

Medieval epistemology begins as ideal theory: when is one ideally situated with regard to one's grasp of the way things are? Taking as their starting point Aristotle's Posterior Analytics, scholastic authors conceive of the goal of cognitive inquiry as the achievement of scientia, a systematic body of beliefs, grasped as certain, and grounded in demonstrative reasons that show the reason why things are so. Obviously, however, there is not much we know in this way. The very strictness of this ideal in fact gives rise to a body of literature on how Aristotle's framework might be relaxed in various ways, for certain specific purposes. In asking such questions, scholastic authors are in effect pursuing the project of social epistemology, by trying to adapt their ideal theory to the circumstances of everyday life

A theory of how rationally to respond to disagreement requires a clear account of how to measure comparative reliability. Such an account faces a Generality Problem analogous to the well-known problem that besets reliabilist theories of knowledge. But whereas the problem for reliabilism has proved recalcitrant, I show that a solution in the case of disagreement is available. That solution is to measure reliability in the most fine-grained way possible, in light of all the circumstances of the present disagreement, but behind a veil that precludes taking into account which views are one's own. This resolves two of the leading obstacles to understanding what disagreement rationally requires: the objection from neglecting the evidence, and the objection from absurd disagreements. Appealing to the contractualist's veil of ignorance also sheds an interesting light on the very different ways in which disagreement gets resolved in epistemology versus political theory. The comparison raises troubling questions on both sides, because it seems doubtful that the political theorist's usual strategies are epistemically rational, and it seems doubtful that the epistemologist's usual strategies are sufficiently attuned to what we care about

The Cambridge History of Medieval Philosophy comprises over fifty specially commissioned essays by experts on the philosophy of this period. Starting in the late eighth century, with the renewal of learning some centuries after the fall of the Roman Empire, a sequence of chapters takes the reader through developments in many and varied fields, including logic and language, natural philosophy, ethics, metaphysics, and theology. Close attention is paid to the context of medieval philosophy, with discussions of the rise of the universities and developments in the cultural and linguistic spheres. A striking feature is the continuous coverage of Islamic, Jewish, and Christian material. There are useful biographies of the philosophers, and a comprehensive bibliography. The volumes illuminate a rich and remarkable period in the history of philosophy and will be the authoritative source on medieval philosophy for the next generation of scholars and students alike.

Oxford Studies in Medieval Philosophy showcases the best scholarly research in this flourishing field. The series covers all aspects of medieval philosophy, including the Latin, Arabic, and Hebrew traditions, and runs from the end of antiquity into the Renaissance. It publishes new work by leading scholars in the field, and combines historical scholarship with philosophical acuteness. The papers will address a wide range of topics, from political philosophy to ethics, and logic to metaphysics. OSMP is an essential resource for anyone working in the area.