Joseph Addison (1721). “Remarks on several parts of Italy , &c in the years 1701, 1702, 1703. The Tatler. By Isaac Bickerstaffe, esq. The Spectator, no.1-89”, p.442
"The Green Revolution, Peace, and Humanity". Norman Borlaug's Nobel lecture in the auditorium of the Nobel Institute, www.nobelprize.org. December 11, 1970.