Bill Warner is the pen name of Bill French (born 1941, United States), a writer, critic of Islam, and the founder of the Center for the Study of Political Islam. He is a former Tennessee State University physics professor. He is listed by the Southern Poverty Law Center as part of a core group of 10 Anti-Muslim hard-liners. Warner has said that his focus is on the political aspects of Islamic doctrine related to kafirs (non-Muslims) rather than on the beliefs of contemporary Muslims. He differentiates Islam as a religion and what he refers to as Political Islam. Warner defines "political Islam," which he also calls Islamism, "as a belief that Islam should control society and politics, not simply personal religious life."