
2010s, 2016, September, First presidential debate (September 26, 2016)
How to Build a Fortune (2006), Trump University audiobook, quoted in * 2016-05-19 Jeremy Diamond Donald Trump in 2006: I 'sort of hope' real estate market tanks CNN https://www.cnn.com/2016/05/19/politics/donald-trump-2006-hopes-real-estate-market-crashes/index.html
2000s
2010s, 2016, September, First presidential debate (September 26, 2016)
Interview, January 1994 http://bleacherreport.com/articles/20702-ayrton-senna-fourteen-years-later
Also attributed to Lewis Grizzard, among others.
Attributed
Interview http://www.paulbettany.net/articles/press.php?p=backstage
Attributed to "an American President" in Ármin Vámbéry (1884), All the Year Round. It more likely originates in a spoof testimonial that Artemus Ward (Charles Farrar Browne) wrote in an advertisement in 1863:
Posthumous attributions