Attributed to John von Neumann by Enrico Fermi in "A meeting with Enrico Fermi" by Freeman Dyson in "Nature", Issue 427 (p. 297), www.nature.com. January 22, 2004.
William Shakespeare, George Steevens, Samuel Johnson, Isaac Reed (1793). “The Plays of William Shakspeare: In Fifteen Volumes : with the Corrections and Illustrations of Various Commentators”, p.229
Eero Saarinen (1962). “Eero Saarinen on His Work: A Selection of Buildings Dating from 1947 to 1964 with Statements by the Architect”, New Haven : Yale University Press