According to Grant, Nordics were in a dire state in the modern world, where after their abandonment of cultural values rooted in religious or superstitious proto-racialism, they were close to committing "race suicide" by miscegenation and being outbred by inferior stock, which was taking advantage of the transition. Nordic theory was strongly embraced by the racial hygiene movement in Germany in the early 1920s and 1930s; however, they typically used the term "Aryan" instead of "Nordic", though the principal Nazi ideologist, Alfred Rosenberg, preferred "Aryo-Nordic" or "Nordic-Atlantean". Stephen Jay Gould described "The Passing of the Great Race" as " … the most influential tract of American scientific racism … "