Another impact Star Wars made on film making was its use of the "Monomyth" or "The Hero's Journey" found in Joseph Campbell's book "The Hero with a Thousand Faces." While George Lucas wrote through 4 drafts of the film, between the first and second drafts, he read Joseph Campbell's book titled "The Hero with a Thousand Faces." He was surprised to find that his first draft followed many of its principles. This epic structure at the deepest roots of the films was a major factor in its success. Many future films successfully adopted the monomyth, such as "The Matrix trilogy", "The Lord of the Rings trilogy", and "The Hobbit trilogy" to name a few.