On the traditional Cartesian picture, knowledge of one's own internal world -- of one's current thoughts and feelings -- is the unproblematic foundation for all knowledge. The philosophical problem is to explain how we can move beyond this knowledge, how we can form a conception of an objective world, and how we can know that the world answers to our conception of it. This book is in the anti-Cartesian tradition that seeks to reverse the order of explanation. Robert Stalnaker argues that we can understand our knowledge of our thoughts and feelings only by viewing ourselves from the outside, and by seeing our inner lives as features of the world as it is in itself. He uses the framework of possible worlds both to articulate a conception of the world as it is in itself, and to represent the relation between our objective knowledge and our knowledge of our place in the world. He explores an analogy between knowledge of one's own phenomenal experience and self-locating knowledge -- knowledge of who one is, and what time it is. He criticizes the philosopher's use of the notion of acquaintance to characterize our intimate epistemic relation to the phenomenal character of our experience, and explores the tension between an anti-individualist conception of the contents of thought and the thesis that we have introspective access to that content. The conception of knowledge that emerges is a contextualist and anti-foundationalist one but, it is argued, a conception that is compatible with realism about both the external and internal worlds.

Starting in the middle -- Epistemic possibilities and the knowledge argument -- Locating ourselves in the world -- Notes on models of self-locating belief -- Phenomenal and epistemic indistinguishability -- Acquaintance and essence -- Knowing what one is thinking -- After the fall.

In this impressive second edition of Theory of Knowledge, Keith Lehrer introduces students to the major traditional and contemporary accounts of knowing. Beginning with the traditional definition of knowledge as justified true belief, Lehrer explores the truth, belief, and justification conditions on the way to a thorough examination of foundation theories of knowledge,the work of Platinga, externalism and naturalized epistemologies, internalism and modern coherence theories, contextualism, and recent reliabilist and causal theories. Lehrer gives all views careful examination and concludes that external factors must be matched by appropriate internal factors to yield knowledge. This match of internal and external factors follows from Lehrer's new coherence theory of undefeated justification. In addition to doing justice to the living epistemological traditions, the text smoothly integrates several new lines that will interest scholars. Also, a feature of special interest is Lehrer's concept of a justification game.This second edition of Theory of Knowledge is a thoroughly revised and updated version that contains several completely new chapters. Written by a well-known scholar and contributor to modern epistemology, this text is distinguished by clarity of structure, accessible writing, and an elegant mix of traditional material, contemporary ideas, and well-motivated innovation.

Does the real world, defined as a world of objects that exist independent of human interests, concerns, and cognitive activities, really exist? Jan Westerhoff argues that we have good reason to believe it does not. His discussion considers four main facets of the idea of the real world, ranging from the existence of a separate external and internal world (comprising various mental states congregated around a self), to the existence of an ontological foundation that grounds the existence of all the entities in the world, and the existence of an ultimately true theory that provides a final account of all there is. As Westerhoff discusses the reasons for rejecting the postulation of an external world behind our representations, he asserts that the internal world is not as epistemically transparent as is usually assumed, and that there are good reasons for adopting an anti-foundational account of ontological dependence. Drawing on conclusions from the ancient Indian philosophical system of Madhyamaka Buddhism, Westerhoff defends his stance in a purely Western philosophical framework, and affirms that ontology, and philosophy more generally, need not be conceived as providing an ultimately true theory of the world.

This book is available either individually, or as part of the specially-priced Arguments of the Philosphers Collection. The purpose of this series is to provide a contemporary assessment and history of the entire course of philosophical thought. Each book constitutes a detailed, critical introduction to the work of a philosopher of major influence and significance. The author's reason for writing this book is that the philosophy of Thomas Reid is widely unread, while the combination of soundness and creativity of his work is unexcelled.