
Speech to the United Negro College Fund (9 May 1989), mangling the Fund's slogan "A mind is a terrible thing to waste."
The Notebooks of Leonardo Da Vinci (1938), XXIX Precepts of the Painter
Speech to the United Negro College Fund (9 May 1989), mangling the Fund's slogan "A mind is a terrible thing to waste."
Source: Writing for Social Scientists (1986), p. 141-142 as cited in: Using the Literature to Formulate your Research Question http://www.utexas.edu/research/pair/usingthe.htm at utexas.edu. Accessed Feb 19, 2013.
Preface to The First Forty-Nine Stories (1944)
Source: Real Live Boyfriends: Yes. Boyfriends, Plural. If My Life Weren't Complicated, I Wouldn't Be Ruby Oliver
Source: David Brancaccio (2013) " Nobel Prize in Economics winner Lars Peter Hansen on imperfect models http://www.marketplace.org/topics/economy/nobel-prize-economics-winner-lars-peter-hansen-imperfect-models" at marketplace.org.
The Notebooks of Leonardo Da Vinci (1938), XXIX Precepts of the Painter