"During the postwar (post 1945 CE) period, these two theories (Father Wilhelm Schmidt and Father Wilhelm Kopper's theory of primal cultures, and Georges Dumezil's theory of Indo-European mythology) have completely dominated research about Indo-European religion and culture—in spite of the fact that they arose in an ideological atmosphere that did not differ much from the Nazi one (Arvidsson 2006, p. 239, parentheses added)."