Sir Thomas Browne (1736). “Sir Thomas Browne's Religio Medici: Or, the Christian Religion, as Professed by a Physician; Freed from Priest-craft and the Jargon of Schools”, p.17
Alan Greenspan's Testimony Before the Committee on Banking and Financial Services, U.S. House of Representatives, www.federalreserve.gov. July 24, 1998.