This is Volume VIII of nineteen in a collection of Abnormal and Clinical Psychology. Originally published in 1927, this book discusses the idea that to treat the neurotic, we must understand him, and try to discover why his personality differs from the normal and that we must answer the questions why a patient breaks down at all, why one person breaks down in one way, and another shows a different group of symptoms, and when he has broken down, what is likely to happen to him.