Homosexuality
In 1950 Hubbard published Dianetics: The Modern Science of Mental Health, introducing his "science of the mind," Dianetics. He classified homosexuality as an illness or sexual perversion, taking a view that was somewhat more extreme than most, but according to Jeffrey S. Siker in Homosexuality and Religion still within the mainstream of opinion at the time.
Hubbard's "tone scale", a means of classifying individuals and human behaviour on a chart running from +40 (the most beneficial) to -40 (the least beneficial). Sexual perversion, a category in which he included homosexuality, was termed "covert hostility" and given a score of 1.1, "the level of the pervert, the hypocrite, the turncoat, ... the subversive." Such people were "skulking coward who yet contain enough perfidious energy to strike back, but not enough courage ever to give warning."
Read more about this topic: Scientology And Sex