Can we ever really answer the question, “who am I”? In this remarkably clear, fresh and persuasive treatment of a long-standing philosophical question, Jopling argues that we can acquire self-knowledge, but that our attempts to know ourselves shape and alter the very self that is their object; that is, the self we come to know is dependent on how it is known. Self-knowledge is a dynamic and self-transformative process which is only possible in interaction with others.