“In fact, when we own portions of outstanding businesses with outstanding managements, our favorite holding period is forever.”
1988 Chairman's Letter http://www.berkshirehathaway.com/letters/1988.html
Letters to Shareholders (1957 - 2012)
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Warren Buffett 146
American business magnate, investor, and philanthropist 1930Related quotes

“Very few writers of distinction in fact were outstanding as undergraduates.”
Address at Mount Holyoke College (2006)

David C. McClelland (1998) in: Katherine Adams, "Interview by David C. McClelland , in Competency, vol. 4 no.3, Spring 1997, pp.18–23; Republished in orientamento.it http://www.orientamento.it/indice/interview-with-mcclelland/, 19/11/2015

1998 Berkshire Hathaway Annual Meeting, as quoted in The Essays of Warren Buffett : Lessons for Corporate America (1998), p. 92

As quoted by the Times-Herald [Washington, D.C.] (3 March 1942) p. 1

New Zealand captain and top batsman Kane Williamson, quoted on Indian Express, "England vs New Zealand: There’s plenty to learn from Virat Kohli and Joe Root, says Kane Williamson" http://indianexpress.com/article/sports/cricket/england-vs-new-zealand-theres-plenty-to-learn-from-virat-kohli-joe-root-says-kane-williamson/, March 31, 2016.
Source: Management Science (1968), Chapter 6, The Viable Governor, p. 146.