An article "Hitler's Forgotten Library" by Timothy Ryback, published in "The Atlantic" (May 2003), mentions a book from Hitler's private library authored by Ernst Schertel. Schertel, whose interests were flagellation, dance, occultism, nudism and BDSM, had also been active as an activist for sexual liberation before 1933. He had been imprisoned in Nazi Germany for seven months and his doctoral degree was revoked. He is supposed to have sent a dedicated copy of his 1923 book "" to Hitler some time in the mid-1920s. Hitler is said to have marked extensive passages, including one which reads "He who does not have the demonic seed within himself will never give birth to a magical world".