6Shils, Edward, The Virtue of Civility: Selected Essays on Liberalism, Tradition, and Civil Society. Steven Grosby. Indianapolis: Liberty Fund, 1997: 330-333, 322, 338-339.
7Sinopoli, Richard C. Thick-Skinned Liberalism: Redefining Civility. American Political Science Review, 1995, 89 (3): 612.