This book explores the idea that self-knowledge comes in many varieties. We “know ourselves” through many different methods, depending on whether we attend to our propositional attitudes, our perceptions, sensations or emotions. Furthermore, sometimes what we call “self-knowledge” is not the result of any substantial cognitive achievement and the characteristic authority we grant to our psychological self-ascription is a conceptual necessity, redeemed by unravelling the structure of several interlocking concepts.