Robert Barclay (1850). “An Apology for the Christian Divinity: As the Sameis Held Forth and Preached by the People Called, in Scorm Quakers, Being a Full Explanation and Vindication of Their Principles and Doctrines”, p.13
John F. Kerry's testimony before subcommittees of the U.S. Senate (April 18, 1971), as quoted on "Meet the Press" with Tim Russert, www.nbcnews.com. April 18, 2004.