Thomas Jefferson (2011). “Jefferson on Freedom: Wisdom, Advice, and Hints on Freedom, Democracy, and the American Way”, p.34, Skyhorse Publishing, Inc.
George Santayana (1937). “The Works of George Santayana: Dialogues in limbo. Platonism and the spiritual life. A long way round to Nirvana. The prestige of the infinite. Ultimate religion”
Ben Jonson (1752). “Every Man in His Humour: A Comedy. Written by Ben Jonson. With Alterations and Additions. As it is Perform'd at the Theatre-Royal in Drury-Lane”, p.18