Abraham Lincoln (2013). “Leadership Lessons of Abraham Lincoln: Apply the Principles of the Sixteenth President to Your Own Work and Life”, p.14, Skyhorse Publishing, Inc.
Martin Farquhar Tupper (1855). “Proverbial Philosophy: A Book of Thoughts and Arguments, Originally Treated : First and Second Series, Complete in One Volume”, p.24
British comedy stage revue "Beyond the Fringe" written and performed by Peter Cook, Dudley Moore, Alan Bennett, and Jonathan Miller ("Sitting on the Bench", 1961), 1960-1966.