"Knowledge and Its Limits presents a systematic new conception of knowledge as a fundamental kind of mental state sensitive to the knower's environment. It makes a major contribution to the debate between externalist ad internalist philosophies of mind, and breaks radically with the epistemological tradition of analysing knowledge in terms of true belief. The theory casts light on a wide variety of philosophical issues: the problem of scepticism, the nature of evidence, probability and assertion, the dispute between realism and anti-realism and the paradox of the surprise examination. Williamson relates the new conception to structural limits on knowledge which imply that what can be known never exhausts what is true. The arguments are illustrated by rigorous models based on epistemic logic and probability theory. The result is a new way of doing epistemology for the twenty-first century."--BOOK JACKET.

Eighteen leading philosophers offer critical assessments of Timothy Williamson's ground-breaking work on knowledge and its impact on philosophy today. They discuss epistemological issues concerning evidence, defeasibility, scepticism, testimony, assertion, and perception, and debate Williamson's central claim that knowledge is a mental state.

Imagination is celebrated as our vehicle for escape from the mundane here and now. It transports us to distant lands of magic and make-believe. It provides us with diversions during boring meetings or long bus rides. It enables creation of new things that the world has never seen. Yet the focus on imagination as a means of escape from the real world minimizes the fact that imagination seems also to furnish us with knowledge about it. Imagination seems an essential component in our endeavor to learn about the world in which we live--whether we're planning for the future, aiming to understand other people, or figuring out whether two puzzle pieces fit together. But how can the same mental power that allows us to escape the world as it currently is also inform us about the world as it currently is? The ten original essays in Knowledge Through Imagination, along with a substantial introduction by the editors, grapple with this neglected question; in doing so, they present a diverse array of positions ranging from cautious optimism to deep-seated pessimism. Many of the essays proceed by considering specific domains of inquiry where imagination is often employed--from the navigation of our immediate environment, to the prediction of our own and other peoples' behavior, to the investigation of ethical truth. Other essays assess the prospects for knowledge through imagination from a more general perspective, looking at issues of cognitive architecture and basic rationality. Blending perspectives from philosophy of mind, cognitive science, epistemology, aesthetics, and ethics, Knowledge Through Imagination sheds new light on the epistemic role of imagination.

'Knowledge-First' constitutes what is widely regarded as one of the most significant innovations in contemporary epistemology in the past 25 years. Knowledge-first epistemology is the idea that knowledge per se should not be analysed in terms of its constituent parts (e.g., justification, belief), but rather that these and other notions should be analysed in terms of the concept of knowledge. This volume features a substantive introduction and 13 original essaysfrom leading and up-and-coming philosophers on the topic of knowledge-first philosophy. The contributors' essays range from foundational issues to applications of this project to other disciplinesincluding the philosophy of mind, the philosophy of perception, ethics and action theory. Knowledge First: Approaches in Epistemology and Mind aims to provide a relatively open-ended forum for creative and original scholarship with the potential to contribute and advance debates connected with this philosophical project.

What does 'if' mean? Timothy Williamson presents a controversial new approach to understanding conditional thinking, which is central to human cognitive life. He argues that in using 'if' we rely on psychological heuristics, fast and frugal methods which can lead us to trust faulty data and prematurely reject simple theories.

"For those new to philosophy, 'Tetralogue' is a marvellous way into the subject. For those who are old hands, it neatly poses serious questions about truth and falsity, relativism and dogma."--Dust jacket flap.

According to a long tradition, questions about the nature of knowledge are to be answered by analyzing it as a species of true belief. In light of the apparent failure of this approach, knowledge first philosophy takes knowledge as the starting point in epistemology. Knowledge First? offers the first overview of this approach.