Franz Oppenheimer (1864–1943) was a German-Jewish sociologist and political economist, best known for his work on the fundamental sociology of the state. His book The State: Its History and Development Viewed Sociologically was the prototype for Albert Jay Nock's writing, for Frank Chodorov's work, and even for the theoretical edifice that later became Rothbardianism.
Ludwig von Mises: "Liberalism, which demands full freedom of the economy, seeks to dissolve the difficulties that the diversity of political arrangements pits against the development of trade by separating the economy from the state. It strives for the greatest possible unification of law, in the last analysis for world unity of law. But it does not believe that to reach this goal, great empires or even a world empire must be created." - Nation, State, and Economy