By the 1980s, according to historian Bernard Lewis, the volume of antisemitic literature published in the Arab world, and the authority of its sponsors, seemed to suggest that classical antisemitism had become an essential part of Arab intellectual life, considerably more than in late 19th- and early 20th-century France and to a degree that has been compared to Nazi Germany. The rise of political Islam during the 1980s and afterwards provided a new mutation of Islamic antisemitism, giving the hatred of Jews a religious component.