
Cohens v. Virginia, 19 U.S. (6 Wheaton) 264, 387 (1821)
"Miami 1972" (1972), p. 283
The Good Word & Other Words (1978)
Cohens v. Virginia, 19 U.S. (6 Wheaton) 264, 387 (1821)
"Imaginationland" http://andrewsullivan.theatlantic.com/the_daily_dish/2007/10/imaginationland.html, The Daily Dish (25 October 2007)
Fact and Fiction (1961), Part II, Ch. 10: "University Education", p. 153
1960s
As quoted in Conversations with I. M. Pei : Light Is the Key (2000) by Gero von Boehm, p. 113
Google shows that the internet often attributes this statement to Einstein, but never with a source. It does not occur in any book in Google Books.
Misattributed
Interview with President Trump, "Full interview with President Trump on his first 100 days" http://www.washingtonexaminer.com/full-interview-with-president-trump-on-his-first-100-days/article/2621516, 28 April 2017.
2010s, 2017, April