George Washington, John Clement Fitzpatrick, David Maydole Matteson (1777). “The Writings of George Washington from the Original Manuscript Sources, 1745-1799”, p.441
Norman Borlaug's 30th anniversary lecture at the Norwegian Nobel Institute in Oslo (September 8, 2000), as quoted in Ronald Bailey "Global Warming and Other Eco Myths: How the Environmental Movement Uses False Science to Scare Us to Death" (p. 59), 2002.