The materials of Dianetics and Scientology comprise the largest body of information ever assembled on the mind, spirit and life, rigorously refined and codified by L. Ron Hubbard through five decades of research, investigation and development. The results of that work are contained in hundreds of books and more than 3,000 recorded lectures.
The books and lectures that follow form the foundation upon which The Bridge to Freedom is built. They are presented in the sequence Ron wrote or delivered them. In many instances, Ron gave a series of lectures immediately following the release of a new book to provide further explanation and insight of these milestones. Through monumental restoration efforts, those lectures are now available.






