" Some have argued, a few of them violently, that the Caliphate should be restored as the emblem of Muslim unity. These Muslims believe that the ideals of Islam and nationalism are “diametrically opposed to each other,” to quote Mawlana Mawdudi, founder of the Pakistani sociopolitical movement Jama‘at-i Islami (the Islamic Association). "

― Reza Aslan , No God but God: The Origins, Evolution and Future of Islam