Dianetics: The Modern Science of Mental Health (sometimes abbreviated as DMSMH) is a book by L. Ron Hubbard about Dianetics, a system of psychotherapy he developed from a combination of personal experience, basic principles of Eastern philosophy, and the work of psychoanalysts such as Freud. The book is a canonical text of Scientology. It is colloquially referred to as Book One. The book launched the movement, which later defined itself as a religion, in 1950. As of 2013, New Era Publications, the international publishing company of Hubbard's works, sells this book in English and in fifty other languages.