Ambition can creep as well as soar. — Edmund Burke

Burke, Edmund. Letters on a Regicide Peace." The Portable Edmund Burke, edited by Isaac Kramnick. Penguin, 2009, letter 3.

Burke, Edmund. A Third Letter to a Member of the Present Parliament, on the Proposals for Peace with the Regicide Directory of France. London: F. and C. Rivington, 1797.