Friedrich Wilhelm Nietzsche (2016). “The Will to Power, Book I to IV: An Attempted Transvaluation of all Values (Complete)”, p.576, Library of Alexandria
Winston Churchill's speech to the Scottish Unionist Association in Edinburgh, Scotland (September 25, 1924), later published in "Winston S. Churchill: His Complete Speeches, 1897-1963" edited by Robert Rhodes James (Volume 4, p. 3472), 1974.
Walter Lippmann, Clinton Rossiter, James Lare (1982). “The Essential Lippmann: A Political Philosophy for Liberal Democracy”, p.59, Harvard University Press
Walter Lippmann, Clinton Rossiter, James Lare (1982). “The Essential Lippmann: A Political Philosophy for Liberal Democracy”, p.129, Harvard University Press