Portraying the mind as a two-level structure, this book analyzes the architecture of the human mind. Thus, it demonstrates that the mind consists of a basic mind and a supermind--the former non-conscious and non-linguistic, the latter conscious and language-involving. Claiming that philosophers and psychologists have failed to distinguish these levels, Keith Frankish argues that this failure has stood in the way of the successful explanation of a number of puzzling mental phenomena. His book will be valued by philosophers, psychologists, and cognitive scientists.