In August 1938, L. Ron Hubbard wrote of an envisioned psychological and political movement, through which he would attain lasting fame "by smashing his name into history." The effort would be completely amoral, yet shroud itself in "philosophy," with its "real goal" being concealed.
In 1946/47, Hubbard wrote of his hypnotic power over others, and how his words, and his psychology, would hypnotize others, and how he would become their "ruler."
In 1950, He wrote 'Dianetics, The Modern Science of Mental Health', and several years later began Scientology, and shortly thereafter, in accordance with what he called "the religion angle," began the "Church of Scientology."
Hubbard had a gift and talent as a natural psychologist, unfortunately he also had a hidden agenda.
Attracted by the seemingly benign aspects of Dianetics and Scientology, individuals became involved, contributing their ideas and discoveries. Hubbard "borrowed" many of these, usually without giving credit.
In 1955, a peculiar booklet appeared, which Hubbard called the 'Brainwashing manual', it was publicized in an attempt to give credence to Dianetics/Scientology and also to identify critics, dissenters, and psychologists and psychiatrists with Communism, and then the 'Brainwashing manual' faded away, as a propaganda device.
By 1965, that same 'manual' was beginning to be applied, covertly, by Hubbard, to Scientologists, with almost every aspect (of a non-medical nature) being adopted as part of Scientology tech by 1974.
http://www.holysmoke.org/cos/books/brainwa1.jpg
One of the last items of Scientology tech developed by Hubbard was Scientology PR tech, the non-confidential portion of which is available in the 'PR Series'. This PR tech, and other manipulative "handlings," are frequently used by both corporate Scientology and Freezone Scientology to further their own ends, and - not surprisingly - can make discussion of certain aspects of Scientology difficult.
http://www.forum.exscn.net/showthread.php?t=1911
With these things in mind, it might be wise to examine, or re-examine, Scientology with a critical eye, particularly Scientology post-1965. It's also a good idea to keep in mind that Scientology has a tech for preventing, or discouraging, that critical examination.
For almost 50 years, Hubbard's 'manual' has been in application, and it has had an effect, and that effect still resonates, inside and outside Scientology.