What is Scientology? (1993): L. Ron Hubbard conceived of a book built around the question that people invariably ask about Scientology: "What is it?" It contains extensive demographic and statistical information about Scientologists and Scientology (circa 1993) and a general overview of the spiritual beliefs, a biographical pictorial of L. Ron Hubbard's life. It promotes Scientology as "the fastest growing religion in the world" which may have been true at one time, but is no longer true.