He author argues that the sceptical thesis is motivated by a persistent philosophical problem that calls the very possibility of knowledge about the external world into question, and that the sceptical thesis is the only acceptable answer to this problem as traditionally posed.

Barry Stroud's work has had a profound impact on a very wide array of philosophical topics, but there has heretofore been no book-length treatment of his work. The current collection aims to redress this gap, with 13 essays on Stroud's work, all but one new to this volume.

What is knowledge? Is it the same as opinion or truth? Do you need to be able to justify a claim in order to count as knowing it? How can we know that the outer world is real and not a dream? Questions like these have existed since ancient times, and the branch of philosophy dedicated to answering them - epistemology - has been active for thousands of years. In this thought-provoking Very Short Introduction, Jennifer Nagel considers the central problems and paradoxes in the theory of knowledge and draws attention to the ways in which philosophers and theorists have responded to them. By exploring the relationship between knowledge and truth, and considering the problem of scepticism, Nagel introduces a series of influential historical and contemporary theories of knowledge, incorporating methods from logic, linguistics, and psychology, using a number of everyday examples to demonstrate the key issues and debates. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.

In this book, Henrik Lagerlund offers students, researchers, and advanced general readers the first complete history of what is perhaps the most famous of all philosophical problems: skepticism. As the first of its kind, the book traces the influence of philosophical skepticism from its roots in the Hellenistic schools of Pyrrhonism and the Middle Academy up to its impact inside and outside of philosophy today. Along the way, the book covers skepticism during the Latin, Arabic, and Greek Middle Ages and during the Renaissance before moving on to cover Descartes’ methodological skepticism and Pierre Bayle’s super-skepticism in the seventeenth century. In the eighteenth century, it deals with Humean skepticism and the anti-skepticism of Reid, Shepherd, and Kant, taking care to also include reflections on the connections between idealism and skepticism (including skepticism in German idealism after Kant). The book covers similar themes in a chapter on G.E. Moore and Ludwig Wittgenstein, and then ends its historical overview with a chapter on skepticism in contemporary philosophy. In the final chapter, Lagerlund captures some of skepticism’s impact outside of philosophy, highlighting its relation to issues like the replication crisis in science and knowledge resistance.

He author argues that the sceptical thesis is motivated by a persistent philosophical problem that calls the very possibility of knowledge about the external world into question, and that the sceptical thesis is the only acceptable answer to this problem as traditionally posed.

Scepticism, a philosophical tradition that casts doubt on our ability to gain knowledge of the world and suggests suspending judgement in the face of uncertainty, has been influential since is beginnings in ancient Greece. Harald Thorsrud provides an engaging, rigorous introduction to the arguments, central themes and general concerns of ancient Scepticism, from its beginnings with Pyrrho of Elis (c.360-c.270 BCE) to the writings of Sextus Empiricus in the second century CE. Thorsrud explores the differences among Sceptics and examines in particular the separation of the Scepticism of Pyrrho from its later form - Academic Scepticism - which arose when its ideas were introduced into Plato's "Academy" in the third century BCE. He also unravels the prolonged controversy that developed between Academic Scepticism and Stoicism, the prevailing dogmatism of the day. Steering an even course through the many differences of scholarly opinion surrounding Scepticism, Thorsrud provides a balanced appraisal of its enduring significance by showing why it remains so philosophically interesting and how ancient interpretations differ from modern ones.

This volume brings out the varieties of forms of philosophical skepticism that have continued to preoccupy philosophers for the past of couple of centuries, as well as the specific varieties of philosophical response that these have engendered — above all, in the work of those who have sought to take their cue from Kant, Wittgenstein, or Cavell — and to illuminate how these philosophical approaches are related to and bear upon one another. The philosophers brought together in this volume are united by the thought that a proper appreciation of the depth of the skeptical challenge must reveal it to be deeply disquieting, in the sense that skepticism threatens not just some set of theoretical commitments, but also-and fundamentally-our very sense of self, world, and other. Second, that skepticism is the proper starting point for any serious attempt to make sense of what philosophy is, and to gauge the prospects of philosophical progress.