"What is epistemology or 'the theory of knowledge'? Why does it matter? What makes theorizing about knowledge 'philosophical'? And why do some philosophers argue that epistemology - perhaps even philosophy itself - is dead?" "In this introduction, Michael Williams answers these questions, showing how epistemological theorizing is sensitive to a range of questions about the nature, limits, methods, and value of knowing. He pays special attention to the challenge of philosophical scepticism: does our 'knowledge' rest on brute assumptions? Does the rational outlook undermine itself?" Williams explains and criticizes all the main contemporary philosophical perspectives on human knowledge, such as foundationalism, the coherence theory, and 'naturalistic' theories. As an alternative to all of them, he defends his distinctive contextualist approach. As well as providing an accessible introduction for any reader approaching the subject for the first time, this book incorporates Williams's own ideas which will be of interest to all philosophers concerned with the theory of knowledge.