Source of Life Energy. November 1952. 10 lectures. (Companion lectures to the book, Scientology: 8-80.) Just prior to embarking on the famous Philadelphia Doctorate Course lectures, Ron lectured to students in London, where he detailed his path to the discovery and isolation of the thetan as the source of life energy. As part of laying out the route to this discovery, he presents the Qs and the Logics, methods of thinking that apply to any universe. These are the fundamentals of how to think as well as how to evaluate data, and as such open the door to a full understanding of all Scientology.