“Striving for excellence means never being satisfied—always doing things to keep improving, even if it means changing everything we do. It means we never feel that we have arrived. We don’t believe our press clippings. We don’t get complacent and pat ourselves on the backs. We talk about what we could have done better. We believe that we can achieve extraordinary results when we strive for excellence in all we do.”

"A Coincidence," http://books.google.com/books?id=vmpHAAAAIAAJ&q=%22Although+we+talk+so+much+about+coincidence+we+do+not+really+believe+in+it+in+our+heart+of+hearts+we+think+better+of+the+universe+we+are+secretly+convinced+that+it+is+not+such+a+slipshod+haphazard+affair+that+everything+in+it+has+meaning%22&pg=PA215#v=onepage Going Up Stories and Sketches (1950)

26 June, 2017
As President, 2017
Source: Vozópuli http://www.vozpopuli.com/espana/Rajoy-Conteste-senor-Barcenas-telefono_2_1048115186.html

Holly looks at him blankly. Freddy says, “Jones…you’re still new here People suggest ways to improve the company every day. Their ideas go into the suggestion box in the cafeteria—where the cafeteria was, I mean—and they’re never heard from again, except during all-staff meetings when Senior Management picks out the most useless one and announces a cross-functional team to look into it. A year or two later, when everyone’s forgotten about it, we get an e-mail announcing the implementation of something that bears no resemblance to the initial idea and usually has the opposite effect, and in the annual reports this is used as evidence that the company listens and reacts to its workers. That’s what happens when you try to make Zephyr a better place to work.”
Q4/2: November, pp. 208-209
Company (2006)

Source: The Alchemist

As quoted in The Subconscious Diet : It's Not What You Put in Your Mouth; It Is What You Put in Your Mind (2005) by Hugh B. Sanders, p. 104 <!-- also quoted in The First Step : A Peek at the Real World (2006) by Gudmundur O. Sigurdarson, p. 41 -->
Context: Success means doing the best we can with what we have. Success is the doing, not the getting — in the trying, not the triumph. Success is a personal standard — reaching for the highest that is in us — becoming all that we can be. If we do our best, we are a success. Success is the maximum utilization of the ability that you have.

As quoted in "AP Interview: Chinese editor Hu Shuli steps aside, not down" in Associated Press (30 January 2018) https://apnews.com/article/china-censorship-business-international-news-asia-pacific-d1f0e45181c64cd0b1a978842a81affa

" Education by Poetry http://www.en.utexas.edu/amlit/amlitprivate/scans/edbypo.html", speech delivered at Amherst College and subsequently revised for publication in the Amherst Graduates’ Quarterly (February 1931)
1930s

Source: Trial by Fire (2014), Chapter 17 (p. 256)

Reported by Jesse Helms on WRAL-TV as remarks made at Duke University, quoted in The News and Courier (29 December 1970) "Freedom Hoax" http://news.google.com/newspapers?id=RchJAAAAIBAJ&sjid=vgwNAAAAIBAJ&pg=4424,7008512
Disputed