This is the only contemporary text to cover both epistemology and philosophy of mind at an introductory level. It also serves as a general introduction to philosophy: it discusses the nature and methods of philosophy as well as basic logical tools of the trade. The book is divided into three parts. The first focuses on knowledge, in particular, skepticism and knowledge of the external world, and knowledge of language. The second focuses on mind, including the metaphysics of mind and freedom of will. The third brings together knowledge and mind, discussing knowledge of mind (other minds and our own) and naturalism and how epistemology and philosophy of mind come together in contemporary cognitive science.