chapter  1
Pages 5

While you are happy, you know that you are happy; while you are sad, you know that you are sad; while you are reading this book, you know that you are reading it. These are the most common experiences that we have in everyday life. It is called self-consciousness, or simply consciousness, and is often considered a specific feature that distinguishes human beings from other animals. It is one of the central issues of modern Western philosophy and has become a hot topic in the rapidly growing field of cognitive science.