This is a presentation of the diary of mongoloid Paul Scott which he kept for many years with an interconnecting commentary by the author on the facts of his life and an evaluation of what he wrote in terms of his physical and psychological behavior. Paul was the youngest of four in a prominent family, and his birth, following as it did the death of the eldest son, prompted the exceptional, exclusive devotion of his father. Then there was that of Mrs. Keller, in California, a teacher of retarded children who developed kinesthetic techniques to help them learn, and his companion through the years, a Miss Alida Chipman. The diaries which he began to keep at 12 are at first very primitive but become more expansive in what they record as well as vocabulary. ""Mr. Pop"", who took Paul all around the world with him, died when Paul was almost 25; Miss Chipman continued to care for him until at 43, he became too difficult to handle and was placed in a residential school until his death at the advanced age, for a mongoloid, of 47. A closing chapter deals with the causes and handling of mongolism in general contraindicating institutionalization if home care is possible without too great a hardship on the family. A book which brings a sympathetic intelligence to bear on the problem of the mongoloid in particular or the retarded child in general for those personally and/or professionally concerned.