This collection is a major contribution to the understanding and evaluation of Ernest Sosa's profound and wide-ranging philosophy, in epistemology and beyond. A balanced, fair and critical volume, it offers a sensitive appreciation of his wide philosophical purview, a nuanced assessment of the detail of his thought, and a spur to exploring the linkages between the varied topics explored by the subtle mind of this great American scholar. The papers explore a wealth of Sosa's academic interests, including his work on philosophical method, the philosophy of mind and language, metaphysics, and value theory, in addition to his output on epistemology itself. It offers, for example, a rebuttal of the counterarguments to Sosa's reliabilist theory of introspective justification, which itself concludes with some objections to Sosa's stated views on the 'speckled hen' problem. Other authors track the connections of his virtue theory to his advocacy of bi-level epistemology, provide reflections on Sosa's views on the epistemological tradition, and examine the nexus of his beliefs on intuition and philosophical methodology. This volume is an insightful reckoning of Sosa's academic account.

Infinitism is an ancient view in epistemology about the structure of knowledge and epistemic justification, according to which there are no foundational reasons for belief. The view has never been popular, and is often associated with skepticism, but after languishing for centuries it has recently begun a resurgence. Ad Infinitum presents new work on the topic by leading epistemologists. They shed new light on infinitism's distinctive strengths and weaknesses, and address questions, new and old, about its account of justification, reasoning, epistemic responsibility, disagreement, and trust, among other important issues. The volume clarifies the relationship between infinitism and other epistemological views, such as skepticism, coherentism, foundationalism and contextualism, and it offers novel perspectives on the metaphysics, epistemology, and ethics of regresses and reasons.

Epistemic norms play an increasingly important role in many current debates in epistemology and beyond. Paramount among these are debates about belief, action, and assertion. Three primary questions organize the literature. What epistemic requirements constrain appropriate belief? What epistemic requirements constrain appropriate assertion? What epistemic requirements constrain appropriate action? With the tremendous but disparate growth of the literature on epistemic norms, the time is ripe for a volume bringing together papers by established and emerging figures, with an eye toward the interconnections among our three questions. That is precisely what this volume seeks to do.