The Hero with a Thousand Faces is a well-referenced research piece with undeniable truth hidden behind discredited Freudian and misogynistic rhetoric. 
James Campbell proves his monomyth theory using dense writing bloated with references to mythology and theology. My low rating reflects the sexism and dry tone. I acknowledge that the Monomyth is a key stepping stone in literary theory and is a necessary evil when learning about storytelling in human history.