Example is the school of mankind, and they will learn at no other. — Edmund Burke

Burke, Edmund. Letters on a Regicide Peace." The Portable Edmund Burke, edited by Isaac Kramnick. Penguin, 2009, letter 1.

Burke, Edmund. Two Letters to a Member of the Present Parliament, on the Proposals for Peace with the Regicide Directory of France. London: F. and C. Rivington, 1796, letter 1.