The earliest known appearance of this basic statement is a paraphrase of Darwin in the writings of Leon C. Megginson, a management sociologist at Louisiana State University. [[Megginson, Leon C., Lessons from Europe for American Business, Southwestern Social Science Quarterly, 1963, 44(1), 3-13, p. 4]] Megginson's paraphrase (with slight variations) was later turned into a quotation. See the summary of Nicholas Matzke's findings in "One thing Darwin didn't say: the source for a misquotation" http://www.darwinproject.ac.uk/one-thing-darwin-didnt-say at the Darwin Correspondence Project. The statement is incorrectly attributed, without any source, to Clarence Darrow in Improving the Quality of Life for the Black Elderly: Challenges and Opportunities : Hearing before the Select Committee on Aging, House of Representatives, One Hundredth Congress, first session, September 25, 1987 (1988).
Misattributed
“I am a big believer of what Darwin discovered in the Galapagos, proving that the species most responsive to change will survive over apparently stronger or more intelligent competitors.”
"Letter to shareholders" http://www.exor.com/?p=lettera_presidente_dettaglio&s=exor&lang=en, Exor, April 2011
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John Elkann 11
Italian businessman 1976Related quotes
As quoted in Improving the Quality of Life for the Black Elderly: Challenges and Opportunities : Hearing before the Select Committee on Aging, House of Representatives, One Hundredth Congress, first session, September 25, 1987 (1988)
This quote's earliest known source is from Leon C. Megginson (see Charles Darwin)
Misattributed
Reviewing Phillip Johnson's Darwin on Trial for Nature in 1992, as quoted in Perspectives on Science and Christian Faith Vol. 45, p. 47 (1993) by American Scientific Affiliation
“Intelligence is based on how efficient a species became at doing the things they need to survive.”
"Credo" at his official website http://robertfulghum.com/index.php/fulghumweb/credo/; this may be partly influenced by remarks of Albert Einstein in "What Life Means to Einstein: An Interview by George Sylvester Viereck" The Saturday Evening Post (26 October 1929): I am enough of an artist to draw freely upon my imagination. Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.
Source: All I Really Need to Know I Learned in Kindergarten
“I dream big because I believe I am what I think I am”
Darwinism: The Imperialism of Biology?, Expelled: No Intelligence Allowed, 31 October 2007, 2008-02-26 http://expelledthemovie.com/blog/page/3/,