The book is structured around what Sellars himself regarded as the philosophers overarching task: to achieve a coherent vision of reality that will finally overcome the continuing clashes between the world as common sense takes it to be and the world as science reveals it to be. It provides a clear analysis of Sellars groundbreaking philosophy of mind, his novel theory of consciousness, his defense of scientific realism, and his thoroughgoing naturalism with a normative turn. Providing a lively examination of Sellars work through the central problem of what it means to be a human being in a scientific world, this book will be a valuable resource for all students of philosophy.