“We have a saying in Tibet: If a problem can be solved there is no use worrying about it. If it can't be solved, worrying will do no good.”
Source: Seven Years in Tibet
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Heinrich Harrer 2
Austrian writer, photographer, geographer and mountain clim… 1912–2006Related quotes
Source: Codependent No More: How to Stop Controlling Others and Start Caring for Yourself

Stating that he was considering a run as an Independent for US Senate after Olympia Snowe's surprise announcement that she would be retiring from it, as quoted in "Olympia Snowe Retirement Causes Maine Scramble" in the Associated Press (29 February 2012) http://www.huffingtonpost.com/2012/02/29/olympia-snowe-retirement-maine_n_1310524.html
Context: I'm giving it some thought for the very reason that Olympia quit. It's just not working down there and maybe we need to try something different. … We have serious problems in this country but we can't begin to solve them until we solve this shrill deadlock.

Source: Enigmas Of Chance (1985), Chapter 6, Cornell II, p. 122.

letter to Koichi Mano (3 February 1966); published in Perfectly Reasonable Deviations from the Beaten Track: The Letters of Richard P. Feynman (2005), p. 198, 201
also quoted by Freeman Dyson in "Wise Man" http://www.nybooks.com/articles/18350, The New York Review of Books (20 October 2005)
Context: The worthwhile problems are the ones you can really solve or help solve, the ones you can really contribute something to. … No problem is too small or too trivial if we can really do something about it. You say you are a nameless man. You are not to your wife and to your child. You will not long remain so to your immediate colleagues if you can answer their simple questions when they come into your office. You are not nameless to me. Do not remain nameless to yourself — it is too sad a way to be. Know your place in the world and evaluate yourself fairly, not in terms of the naïve ideals of your own youth, nor in terms of what you erroneously imagine your teacher's ideals are.

White House diary (11 February 1981) as quoted in "Reagan's diaries to be published", BBC News (2 May 2007) http://news.bbc.co.uk/2/hi/americas/6614077.stm
1980s, First term of office (1981–1985)

Source: Interview with Shigeru Miyamoto http://www.eurogamer.net/articles/shigeru-miyamoto-interview Eurogamer.net, published on 31 March 2010

With Margaret Warner at ‘Constitutionally Speaking’ in Concord, N.H. on Sept. 14, 2012: David Souter Gets Rock Star Welcome, Offers Constitution Day Warning | PBS NewsHour http://www.pbs.org/newshour/rundown/conversation-justice-david-souter/

Part One, chapter 4, page 18
Why Government Doesn't Work (1995)