Constitutional liberalism is different from liberal constitutionalism. It overlaps with legal theory, constitutionalism, philosophy of law and democratic theory. The dominant one was Antall's government circle, characterised by pragmatic, liberal conservatism, constitutionalism and legalism. Its four main branches are constitutionalism, paleolibertarianism, small government conservatism and Christian libertarianism. Kant was basing his doctrine exclusively on the idea of constitutionalism and constitutional government. Kant was basing his doctrine on none other but constitutionalism and constitutional government. The study of constitutions is not necessarily synonymous with the study of constitutionalism. The concept of "authoritarian constitutionalism" has been developed by legal scholar Mark Tushnet. Wang contends that the fixed class nature of constitutionalism is bourgeoisie. Moral principle, constitutionalism, and faith in God were among the prerequisites for alleviating human strife. The book serves as a primer for progressives interested in promoting liberal constitutionalism. This contrasts with the liberal conception of constitutionalism that "law, rather than men, is supreme". He argues that executive power had to be tamed to become compatible with liberal constitutionalism. The notion of constitutionalism is primarily one of culture. He debated Robert Bork on American constitutionalism.