Dan Fodio wrote more than a hundred books concerning religion, government, culture, and society. He developed a critique of existing African Muslim elites for what he saw as their greed, paganism, violation of the standards of Sharia law, and use of heavy taxation. He encouraged literacy and scholarship, for women as well as men, and several of his daughters emerged as scholars and writers. His writings and sayings continue to be much quoted today, and are often affectionately referred to as Shehu in Nigeria