Relation+to+the+Monomyth

George Lucas met with Joseph Campbell for the first 3 movies to make sure that his movie followed it exactly. The monomyth is a subconscious collective of mythical adventure involving a hero's journey to master both worlds. For a more detailed overview on the monomyth click here. The effort certainly shows, with a total sales reap of over 4.2 billion US dollars worldwide for all six of his movies.