What is Knowledge? Where does it come from? Can we know anything at all? This lucid and engaging introduction grapples with these central questions in the theory of knowledge, offering a clear, non-partisan view of the main themes of epistemology including recent developments such as virture epistemology and contextualism. Duncan Pritchard discusses both traditional issues and contemporary ideas in thirteen easily digestible sections which include: the value of knowledge; the structure of knowledge; virtues and faculties; perception; testimony and memory; induction; and scepticism. "What is this thing called knowledge?" contains many helpful student-friendly features. Each chapter concludes with a useful summary of the main ideas discussed, study questions, annotated further reading, and a guide to web resources. Text-boxes provide bite-sized summaries of key concepts and major philosophers, and clear and interesting examples are used throughout, whilst a helpful glossary explains important terms. This is an ideal first textbook in the theory of knowledge for undergraduates taking a first course in philosophy.