Der Mythus des 20. Jahrhunderts
In 1929 Rosenberg founded the Militant League for German Culture. He later formed the "Institute for Research on the Jewish Question", the first branch of a projected Advanced School of the NSDAP, dedicated to identifying and attacking Jewish influence in German culture and to recording the history of Judaism from a radical nationalist perspective. He became a Reichstag Deputy in 1930 and published his book on racial theory "The Myth of the Twentieth Century" ("Der Mythus des 20. Jahrhunderts") which deals with key issues in the Nazi ideology, such as the "Jewish question." Rosenberg intended his book as a sequel to Houston Stewart Chamberlain's above-cited book. Despite selling more than a million copies by 1945, its influence within Nazism remains doubtful. It is often said to have been a book that was officially venerated within Nazism, but one that few had actually read beyond the first chapter or even found comprehensible. Hitler called it "stuff nobody can understand" and disapproved of its pseudo-religious tone.