This volume features original essays that advance debates on propositional and doxastic justification and explore how these debates shape and are shaped by a range of established and emerging topics in contemporary epistemology. This is the first book-length project devoted to the distinction between propositional and doxastic justification. Notably, the contributors cover the relationship between propositional and doxastic justification and group belief, credence, commitment, suspension, faith, and hope. They also consider state-of-the-art work on knowledge-first approaches to justification, hinge-epistemology, moral and practical reasons for belief, epistemic normativity, and applications of formal epistemology to traditional epistemological disputes. Finally, the contributors promise to reinvigorate old epistemological debates on coherentism, externalism, internalism, and phenomenal conservatism. Propositional and Doxastic Justification will be of interest to researchers and advanced students working in epistemology, metaethics, and normativity.

The present collection represents an attempt to bring together several contributions to the ongoing debate pertaining to supervenience of the normative in law and morals and strives to be the first work that addresses the topic comprehensively. It addresses the controversies surrounding the idea of normative supervenience and the philosophical conceptions they generated, deserve a recapitulation, as well as a new impulse for further development. Recently, there has been renewed interest in the concepts of normativity and supervenience. The research on normativity – a term introduced to the philosophical jargon by Edmund Husserl almost one hundred years ago – gained impetus in the 1990s through the works of such philosophers as Robert Audi, Christine Korsgaard, Robert Brandom, Paul Boghossian or Joseph Raz. The problem of the nature and sources of normativity has been investigated not only in morals and in relation to language, but also in other domains, e.g. in law or in the c ontext of the theories of rationality. Supervenience, understood as a special kind of relation between properties and weaker than entailment, has become analytic philosophers’ favorite formal tool since 1980s. It features in the theories pertaining to mental properties, but also in aesthetics or the law. In recent years, the ‘marriage’ of normativity and supervenience has become an object of many philosophical theories as well as heated debates. It seems that the conceptual apparatus of the supervenience theory makes it possible to state precisely some claims pertaining to normativity, as well as illuminate the problems surrounding it.

Justification as Ignorance offers an original account of epistemic justification as both non-factive and luminous, vindicating core internalist intuitions without construing justification as an internal condition knowable by reflection alone. Sven Rosenkranz conceives of justification, in its doxastic and propositional varieties, as a kind of epistemic possibility of knowing and of being in a position to know. His account contrasts with recent alternative views that characterize justification in terms of the metaphysical possibility of knowing. Instead, he develops a suitable non-normal multi-modal epistemic logic for knowledge and being in a position to know that respects the finding that these notions create hyperintensional contexts. He also defends his conception of justification against well-known anti-luminosity arguments, shows that the account allows for fruitful applications and principled solutions to the lottery and preface paradoxes, and provides a metaphysics of justification and its varying degrees of strength that is compatible with core assumptions of the knowledge-first approach and disjunctivist conceptions of mental states.

Michael Bergmann provides a decisive refutation of internalism and a sustained defense of externalism, developing his theory of justification by imposing both a proper function and a no-defeater requirement.

Justification as Ignorance offers an original account of epistemic justification as both non-factive and luminous, vindicating core internalist intuitions without construing justification as an internal condition knowable by reflection alone. Sven Rosenkranz conceives of justification, in its doxastic and propositional varieties, as a kind of epistemic possibility of knowing and of being in a position to know. His account contrasts with recent alternative views that characterize justification in terms of the metaphysical possibility of knowing. Instead, he develops a suitable non-normal multi-modal epistemic logic for knowledge and being in a position to know that respects the finding that these notions create hyperintensional contexts. He also defends his conception of justification against well-known anti-luminosity arguments, shows that the account allows for fruitful applications and principled solutions to the lottery and preface paradoxes, and provides a metaphysics of justification and its varying degrees of strength that is compatible with core assumptions of the knowledge-first approach and disjunctivist conceptions of mental states.

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.

Broadly speaking, this is a book about truth and the criteria thereof. Thus it is, in a sense, a book about justification and rationality. But it does not purport to be about the notion of justification or the notion of rationality. For the assumption that there is just one notion of justification, or just one notion of rationality, is, as the book explains, very misleading. Justification and rationality come in various kinds. And to that extent, at least, we should recognize a variety of notions of justification and rationality. This, at any rate, is one of the morals of Chapter VI. This book, in Chapters I-V, is mainly concerned with the kind of justification and rationality characteristic of a truth-seeker, specifically a seeker of truth about the world impinging upon the senses: the so-called empirical world. Hence the book's title. But since the prominent contemporary approaches to empirical justification are many and varied, so also are the epistemological issues taken up in the following chapters. For instance, there will be questions about so-called coherence and its role, if any, in empirical justification. And there will be questions about social consensus (whatever it is) and its significance, or the lack thereof, to empirical justification. Furthermore, the perennial question of whether, and if so how, empirical knowledge has so-called founda tions will be given special attention.