theory of money(A coherent group of general propositions about the supply and demand of money, interest rates, the flow of money's influence on the overall economy or the policies that should be adopted by institutions controlling the money supply)
theory of the welfare state(A political conception of government in a capitalist economy where the state is responsible for insuring that all members of society attain a minimum standard of living through redistribution of resources, progressive taxation and universal social programs, including health care and education)