Calvin Mooers (1959) Mooers' law: or, why some retrieval systems are used and others are not. p. 138
Quotes about custom
page 5

Hindu Sangathan p. 95, quoted in Elst, Koenraad (2014). Decolonizing the Hindu mind: Ideological development of Hindu revivalism. New Delhi: Rupa. p.377

Interview with Inc. Magazine for its "The Entrepreneur of the Decade Award" (1 April 1989) http://www.inc.com/magazine/19890401/5602.html
1980s
Variant: You can't just ask customers what they want and then try to give that to them. By the time you get it built, they'll want something new.
It – How Churches and Leaders Can Get It and Keep It (2008, Zondervan)

“Customer Discovery is damn hard work. You can't fake it.”
Source: The Four Steps to the Epiphany (2013), p. 50.
From his edition of Swift's Works, as quoted in The Ethics of Diet: A Catena of Authorities Deprecatory of the Practice of Flesh-eating https://archive.org/stream/ethicsofdietcate00will/ethicsofdietcate00will#page/n3/mode/2up by Howard Williams (London: F. Pitman, 1883), p. 168.
Hayek's Journey: The Mind of Friedrich Hayek (2003)

Sir Muhammad Iqbal’s 1930 Presidential Address to the 25th Session of the All-India Muslim League, Allahabad, 29 December 1930 (from University of Columbia website http://www.columbia.edu/itc/mealac/pritchett/00islamlinks/txt_iqbal_1930.html)

The Tabqat-i-Akbari translated by B. De, Calcutta, 1973, Vol. I, p. 11-16
Quotes from Muslim medieval histories

“I don't think anyone has done a [tablet] product that I see customers wanting.”
Here's Why Surface Beats Apple's iPad: Ballmer, 25 October 2012, 2014-02-28, CNBC's Squawk Box http://cnbc.com/id/49551054,
2010s

2004-07-03 speech to Congress opposing House resolution celebrating 40th anniversary of Civil Rights Act, quoted in * Civil Rights Act
RonPaul.com
http://www.ronpaul.com/on-the-issues/civil-rights-act/
2000s, 2001-2005

In his influential commentary on the provision many years later, Sir Edward Coke interpreted the words 'by the law of the land' to mean the same thing as 'by due proces of the common law'.
Obergefell v. Hodges http://www.supremecourt.gov/opinions/14pdf/14-556_3204.pdf (26 June 2015).
2010s

Re: ...and even for those _NOT_ interested... http://groups.google.com/group/comp.lang.lisp/msg/8ff1b48135b78862 (Usenet article).
Usenet articles, Miscellaneous

Source: Lectures on The Industrial Revolution in England (1884), p. 28-29

Source: Social Justice in Islam (1953), p. 26

Cramlington v. Evans (1680), Show. 4.

“The right measure is not how many customers you've got, but how closely you hold them.”
Lift Me UP! Service With A Smile (2005)

Don Soderquist “ Live Learn Lead to Make a Difference https://books.google.com/books?id=s0q7mZf9oDkC&lpg=pg=PP1&dq=Don%20Soderquist&pg=PP1#v=onepage&q&f=false, Thomas Nelson, April 2006 p. 120.
On Putting Your Values First
Jewish War

When things look so bleak, with a government in gridlock, and it looking like we’re poised for another massive increase in sectarian violence.
Ten Years Later, U.S. Has Left Iraq with Mass Displacement & Epidemic of Birth Defects, Cancers https://www.democracynow.org/2013/3/20/ten_years_later_us_has_left (March 20, 2013), '.
Edgar H. Schein (2010). Dec Is Dead, Long Live Dec: The Lasting Legacy of Digital Equiment Corporation. p. 60

“How many things, both just and unjust, are sanctioned by custom!”
Act IV, scene 7, line 11 (839).
Heauton Timorumenos (The Self-Tormentor)

“No business plan survives its first contact with customers.”
Source: The Startup Owner’s Manual (2012), p. 53.
Source: Object-oriented modeling and design (1990), p. 153; as cited in: Roger Chiang, Keng Siau, Bill C. Hardgrave (2009) Systems Analysis and Design. p. 163
Source: Economic Forces at Work, 1977, p. 129-130 ; as cited in Eggertsson (1990; 34)

Source: The Philosophy of Education (His 1889 book)

The New Yorker (30 July 1990)

Thornton v Shoe Lane Parking Ltd [1971] 2QB 163; 1 All ER 686.
Judgments

"Ethan Brand" (1850)

“While few customer offerings have a life, all great products and services have a soul.”
Source: Karaoke Capitalism, 2005, p. 224

Anarchism: Its Philosophy and Ideal (1896)

1990s, I Am a Man, a Black Man, an American (1998)

Source: Out Of The Crisis (1982), p. 175

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 483.

p, 125
The History of Oracles, and the Cheats of the Pagan Priests (1688)
Source: More Money than Brains (2010), Chapter Three, Is our Schools Sucking?, p. 90

Abbas Sarwani, Tarikh-i-Sher Shahi, trs. E.D. vol. IV, pp. 390, 424. quoted from Lal, K. S. (1999). Theory and practice of Muslim state in India. New Delhi: Aditya Prakashan. Chapter 5

The Jackdaw (translation from Vincent Bourne).
Bartlett's Familiar Quotations, 10th ed. (1919)

Source: Reflections on Sex Equality under Law (1991) Yale Law Journal Vol.100 No. 5, p. 1212

Christensen cited in: Philip Kotler, John A. Caslione (2009) Chaotics: The Business of Managing and Marketing in the Age of Turbulence. p. 23
2000s
Quoted in The Structure and Interpretation of Computer Programs by Hal Abelson, Gerald Jay Sussman and Julie Sussman (McGraw-Hill, 2nd edition, 1996).

Women in War speech, broadcast from Sydney, Australia — February 20, 1942
Wilderness Years (1941-1949)
Source: http://www.emersonkent.com/speeches/women_in_war.htm
Man's Rise to Civilization (1968)

1980s, GNU Manifesto (1985)

The History of Rome - Volume 2

Letter to Lord Holland (10 December 1815), quoted in Philip Ziegler, Melbourne. A Biography of William Lamb, 2nd Viscount Melbourne (London: Collins, 1976), p. 70
A Brave New Modular World - Another MS Patent Application http://www.groklaw.net/article.php?story=2007012808444146, retrieved 1 September 2010.

Quote in 'The New Art – The New Life', Piet Mondrian, op. cit. Introd. Note 1., 1931
1930's
“Unnecessary customs live a brutally short life in America.”
"Now That Men Can Cry..." (1977), p. 290
The Good Word & Other Words (1978)
Barry M. Staw & Gerald R. Salancik (1977). New directions in organizational behavior. p. 4

A Week on the Concord and Merrimack Rivers http://www.gutenberg.org/dirs/etext03/7cncd10.txt (1849), Sunday
Source: "Corporate social responsibility in business-to-business markets", 2013, p. 54; Article abstract

Homosexuality: Bipotenitality, Terminology, and History

“One judges an epoch as much by its Art as by its customs.”
Letter to Sophie Brzeska-Savage Messiah By H S (Jim) Ede Heinimann (1931)
Source: MDA Distilled. Principles of Model-Driven Architecture, 2003, p. 36.

Speech in Grimsby (20 May 1977), from Enoch Powell on 1992 (Anaya, 1989), p. 93
1970s

Interview in New York http://go-to-hellman.blogspot.com/2010/09/philosopher-tim-oreilly-lights-up.html by Publishing Point group (29 September 2010)

To Leon Goldensohn (10 March 1946). Quoted in "The Nuremberg Interviews" - by Leon Goldensohn, Robert Gellately - History - 2004.

“Of course poets have morals and manners of their own, and custom is no argument with them.”
The Hand of Ethelberta (1876), ch. 2

RIM's Balsillie Slams Jobs, Says Users Are 'Tired' of Apple http://pcmag.com/article2/0,2817,2371119,00.asp in PC Magazine (19 October 2010)

Lee Kuan Yew, Interview with Fareed Zakaria of Foreign Policy, 1994 https://www.foreignaffairs.com/articles/asia/1994-03-01/conversation-lee-kuan-yew
1990s

Valve boss blows a gasket over PS3, Tim Ingham, MCV, 2008-01-15, 2008-02-21 http://www.mcvuk.com/news/25317/Valve-boss-blows-a-gasket-over-PS3,

In an interview with David L. Ulin to Los Angeles Times - Gay Talese talks with David L. Ulin http://latimesblogs.latimes.com/jacketcopy/2010/10/gay-talese-talks-with-david-l-ulin.html (October 15, 2010)

As quoted [paraphrased] from * http://www.javaworld.com/javaworld/jw-07-1999/jw-07-toolbox.html
Java World
1999
July
Toolbox

translation by Burton Watson
I once traveled west to Mount K’ung-t'ung and passed Cho-lu [Mountain] in the north; to the east I drifted along the coast, and to the south I floated over the Huai River and the Chiang. Wherever I went, all of the village elders would point out for me sites of The Huang-ti, Yao and Shun. The traditions were certainly very different from each other. In sum, [those accounts of the elders] which were not far from the ancient-text versions [of the classics], tend to be plausible.
translated by Tsai-fa Cheng, Zongli Lu, William H. Nienhauser, Jr., and Robert Reynolds, in The Grand Scribe’s Records, edited by William H. Nienhauser, Jr.
五帝本紀 https://zh.wikisource.org/wiki/%E5%8F%B2%E8%A8%98/%E5%8D%B7001
Records of the Grand Historian
Source: Funky Business Forever, 2007, p. 184

Interview with Recode: "Oracle co-CEO Mark Hurd on Recode Decode" https://www.recode.net/2017/7/5/15917638/transcript-oracle-co-ceo-mark-hurd-onstage-cloud-computing-saas-on-recode-decode (05 July 2017)

Abstract.
Software Cost Estimation with Cocomo II with Cdrom (2000)

Clayton Christensen and Joseph L. Bower. (1996) "Customer power, strategic investment, and the failure of leading firms", Strategic Management Journal, Vol. 17(3), pp. 199 as cited in: C.G. Sandström (2010) A revised perspective on Disruptive Innovation p. 8
1990s
Source: Management and technology, Problems of Progress Industry, 1958, p. 23
Abstract 2009 edition.
Marketing management: A contemporary perspective, 2003

Stride Toward Freedom (1958)
1950s
Variant: The decision we must make now is whether we will give our allegiance to outmoded and unjust customs or to the ethical demands of the universe. As Christians we owe our allegiance to God and His will, rather than to man and his folkways

"Hayek and conservatism", in Edward Feser (ed.), The Cambridge Companion to Hayek (2006)

Source: The Psychology of Advertising in Theory and Practice, 1908, p. 176