Pope John Paul II (1998). “Faith and Reason: Encyclical Letter Fides Et Ratio of the Supreme Pontiff John Paul II to the Bishops of the Catholic Church on the Relationship Between Faith and Reason”
Benjamin Franklin (1987). “Poor Richard's Almanack: Being the Choicest Morsels of Wisdom, Written During the Years of the Almanack's Publication”, p.16, Peter Pauper Press, Inc.
Richard Dawkins' Speech at the Edinburgh International Science Festival (April 15, 1992); quoted in "EDITORIAL: A scientist's case against God", "The Independent"(London), (p. 17), April 20, 1992.