Adolf Bastian’s theory of the ethnic ‘Elementary Ideas,’ which, in their primal psychic character (corresponding to the Stoic Logoi spermatikoi), should be regarded as ‘the spiritual (or psychic) germinal dispositions out of which the whole social structure has been developed organically’
Campbell directly cites Bastian’s 1895 formulation of Elementargedanken, identifying them as psychic germinal dispositions homologous to the Stoic logoi spermatikoi and to Jung’s archetypes, and establishing them as the inductive foundation of cross-cultural mythological research.
, The Hero With a Thousand Faces, 2015thesis