"Dianetics: The Evolution of a Science" is an article by American writer L. Ron Hubbard, published in Astounding Science Fiction (cover date May 1950) published immediately preceding the release of Dianetics: The Modern Science of Mental Health that introduced Dianetics. Dianetics: The Evolution of a Science covers how Hubbard defined the reactive mind and developed the procedures to get rid of it. In 1955, the article was expanded into a book of the same name (Bridge Publications, ; not to be confused with the larger and more well-known book Dianetics: The Modern Science of Mental Health). The publication includes Hubbard's account of the reasoning behind, and development of, Dianetics, more so than its "sister volumes" DMSMH and Dianetics: The Original Thesis (aka The Dynamics of Life). The book is one of the canonical texts of Scientology. See also Bibliography of Scientology References External links Dianetics: The Evolution of a Science: Google Books Preview The Fabulous Fifties (Joe Cisar, Operation Clambake) Books published by the Church of Scientology 1955 non-fiction books Non-fiction works by L. Ron Hubbard Works originally published in Analog Science Fiction and Fact