<human>:  When did the Church of Dianetics (scientology) start?
<bot>: The Church of Scientology was founded in 1954 by L. Ron Hubbard. The Church of Scientology is a religious organization that believes in the existence of a supernatural power called thetan. Thetan is a spiritual being that lives inside of each person. Thetan is the source of all human thoughts, emotions, and actions.