Heresy (Paperback)

Heresy is proposing some unorthodox change to an established system of belief, especially a religion, that conflicts with the previously established opinion of scholars of that belief such as canon. It is sometimes confused with apostasy which is disaffiliation from orthodoxy and blasphemy which is defamation of orthodox opinion. The study of heresy is heresiology. The founder or leader of a heretical movement is called a heresiarch. One who espouses heresy is called a heretic.