Robert Nisbet (1913–1996), the eminent sociologist, taught at Columbia University and made his mark on intellectual life through observing the intermediating structures in society that serve as a bulwark between the individual and the state. He was known as a conservative, and his work is on every list of conservative contributions to the social sciences, but far from being a typical conservative, he blasted conservatism as a species of militarist and invasive interventionism, one that abused people's public and private pieties in the service of a ghastly civic ethic of statism. He is the author of The Present Age: Progress and Anarchy in Modern America and Twilight of Authority.
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