Campbell explores the theory that mythological narratives frequently share a fundamental structure. The similarities of these myths brought Campbell to write his book in which he details the structure of the monomyth. He calls the motif of the archetypal narrative, "the hero's adventure". In a well-known passage from the introduction to The Hero with a Thousand Faces, Campbell summarizes the monomyth:
A hero ventures forth from the world of common day into a region of supernatural wonder: fabulous forces are there encountered and a decisive victory is won: the hero comes back from this mysterious adventure with the power to bestow boons on his fellow man.[3]
In laying out the monomyth, Campbell describes a number of stages or steps along this journey. "The hero's adventure" begins in the ordinary world. He must depart from the ordinary world, when he receives a call to adventure. With the help of a mentor, the hero will cross a guarded threshold, leading him to a supernatural world, where familiar laws and order do not apply. There, the hero will embark on a road of trials, where he is tested along the way. The archetypal hero is sometimes assisted by allies. As the hero faces the ordeal, he encounters the greatest challenge of the journey. Upon rising to the challenge, the hero will receive a reward, or boon. Campbell's theory of the monomyth continues with the inclusion of a metaphorical death and resurrection. The hero must then decide to return with this boon to the ordinary world. The hero then faces more trials on the road back. Upon the hero's return, the boon or gift may be used to improve the hero's ordinary world, in what Campbell calls, the application of the boon.
While many myths do seem to follow the outline of Campbell's monomyth, there is some variance in the inclusion and sequence of some of the stages. Still, there is an abundance of literature and folklore that follows the motif of the archetypal narrative, paralleling the more general steps of "Departure" (sometimes called Separation), "Initiation", and "Return". "Departure" deals with the hero venturing forth on the quest, including the call to adventure. "Initiation" refers to the hero's adventures that will test him along the way. The last part of the monomyth is the "Return", which follows the hero's journey home.
Campbell studied religious, spiritual, mythological and literary classics including the stories of Osiris, Prometheus, the Buddha, Moses, Mohammed, and Jesus. The book cites the similarities of the stories, and references them as he breaks down the structure of the monomyth.
The book includes a discussion of "the hero's journey" by using the Freudian concepts popular in the 1940s and 1950s. Campbell's theory incorporates a mixture of Jungian archetypes, unconscious forces, and Arnold van Gennep's structuring of rites of passage rituals to provide some illumination.[4] "The hero's journey" continues to influence artists and intellectuals in contemporary arts and culture, suggesting a basic usefulness for Campbell's insights beyond mid-20th century forms of analysis.
