Walter Bagehot (1873). “Physics and Politics: Or, Thoughts on the Application of the Principles of "natural Selection" and "inheritance" to Political Society”, p.75
C. S. Lewis, Michael Ward (2017). “The Abolition of Man: C.S. Lewis’s Classic Essay on Objective Morality: A Critical Edition by Michael Ward”, p.66, TellerBooks
Gloria Steinem (2017). “Passion, Politics, and Everyday Activism: Collected Essays: Moving Beyond Words; Outrageous Acts and Everyday Rebellions; and Revolution from Within”, p.815, Open Road Media