Dogma, in its broadest sense, is any belief held definitively and without the possibility of reform. It may be in the form of an official system of principles or doctrines:of a religion, such as Judaism, Christianity or Islam of the positions of a philosopher or of a philosophical school, such as Stoicism of the postulates or political axioms of political belief-systems such as fascism, socialism, progressivism, liberalism, or conservatism