Whether the Nazi ideology had a special view concerning the various esoteric doctrines (aside from confusing them with Freemasonry) is not clear. Concerning Anthroposophy, a book whose title denounced Rudolf Steiner as a fraud (Schwindler) and a false prophet had been published by Gregor Schwartz-Bostunitsch in 1930.[55] Schwartz-Bostunitsch had been an "enthusiastic Anthroposophist" from 1923, but was disaffected by 1929 and later joined the SS.[56]