In 1930, Buber became an honorary professor at the University of Frankfurt am Main. He resigned in protest from his professorship immediately after Adolf Hitler came to power in 1933. On October 4, 1933, the Nazi authorities forbade him to lecture. In 1935, he was expelled from the Reich Chamber of Literature. He then founded the Central Office for Jewish Adult Education, which became an increasingly important body, as the German government forbade Jews to attend public education.[40] The Nazi administration increasingly obstructed this body.