Dianetics: The Modern Science of Mental Health
Dianetics was first written in 1950 by Scientology founder L. Ron Hubbard. Considered to be an essential text for the religion, the book is divided into three volumes, "The Goal of Man," "The Single Source of All Inorganic Mental and Organic Psychosomatic Ills," and "Therapy." These sections and their subsequent chapters explain the principal ideas and practices of Scientology. A helpful list of definitions for important concepts is also included — such as "reactive mind," "engrams," "thetan," "disconnection," and "auditing" — as well as a short biography of Hubbard.