Coppedge investigates the latent categories of immortal knowledge in a philosophical quest for an intellectual elixir. Nathan's knowledge comes from such areas as perpetual motion machines and coherent philosophy systems, perhaps some of the nearest areas to illumination on the subject. Coppedge, widely known for his concepts of perpetual motion machines, is also an author of philosophical articles, and vowed at the age of nine to become an immortal. These twenty-six articles are reprinted with permission from Ezinearticles.com, his original publisher.