Fortresses Quotes
"I'm Glad You Asked Me That : Irish Political Quotations". Book by Eoghan Corry, 2007.
Martin Luther (1931). “Early Protestant Educators: The Educational Writings of Martin Luther, John Calvin, and Other Leaders of Protestant Thought”, Ams PressInc
"The Tyrants: 2500 Years of Absolute Power and Corruption" by Clive Foss, London: Quercus Publishing, (p. 131), 2006.
"The Dreams of Reason: The Computer and the Rise of the Sciences of Complexity". Book by Heinz Pagels. Chapter 3, p. 94, 1988.
Marcel Proust (2013). “Delphi Complete Works of Marcel Proust (Illustrated)”, p.909, Delphi Classics
Leon Uris (1980). “Topaz”