“Don't assume that a species is intelligent because it produces intelligent individuals.”
Infinity Beach (2000)
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Jack McDevitt 125
American novelist, Short story writer 1935Related quotes

“Intelligence is the ability of a species to live in harmony with its environment.”
Worldfest video http://www.youtube.com/watch?v=PnhqmF-RBu4

“Intelligence is based on how efficient a species became at doing the things they need to survive.”

“We have intelligent species on our planet that we are not even trying to communicate with.”
Worldfest video http://www.youtube.com/watch?v=PnhqmF-RBu4

Source: Academy Series - Priscilla "Hutch" Hutchins, Chindi (2002), Chapter 31 (p. 432)

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

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