On May 9, 1950, L. Ron — or Lafayette Ronald, if you prefer — published ”Dianetics: The Modern Science of Mental Health“. This book became the basis of the highly popular religion called Scientology.
When he wrote Dianetics, Hubbard was already a published author. In the 1930s, he wrote fantasy and science fiction.
In 1949, after finishing a stint in the U.S. Navy, which included service during World War II, Hubbard began publishing articles in “Astounding Science Fiction”, a magazine that published works by Isaac Asimov and Jack Williamson. From these grew “Dianetics: The Modern Science of Mental Health”.
Hubbard claimed that phenomena known as “engrams” (i.e. memories) were the cause of all psychological pain, which could harm mental and physical health. He said people could become “clear,” according to the History Channel website story, achieving an exquisite state of clarity and