Source: The Owl Was a Baker's Daughter (1980), p. 33
Quotes about fail
page 21

Speech http://hansard.millbanksystems.com/commons/1966/jul/22/medical-termination-of-pregnancy-bill in the House of Commons in favour of the Bill legalising abortion (22 July 1966)
1960s

Source: The Great War for Civilization (2005), Chapter 8: Drinking the Poisoned Chalice (page 333)

As quoted in "Hebron Is Jerusalem's Sister" http://www.hebron.com/english/article.php?id=223, Sdeh Boker, 18 Shvat 5730 (25 January 1970)

Interview with Charles Krauthammer: America's "Great Success Story", in Middle East Quarterly (December 1994)
1990s, 1994
“Blest pair! if aught my verse avail,
No day shall make your memory fail
From off the heart of time.”
Source: Translations, The Aeneid of Virgil (1866), Book IX, p. 324

Introduction, Sec. 4
De architectura (The Ten Books On Architecture) (~ 15BC), Book II

The fight against racism doesn't stop here (2013)

Interview with Big Think, in reference to the 1980 presidential election, and the Iran hostage crisis, December 14, 2010.
[Carter: Biggest failure was '80 loss, Politico, Politico, December 14, 2010, http://www.politico.com/news/stories/1210/46375.html]
Post-Presidency
To be a Jew in the Twentieth Century (1944)

About Adolf Hitler as quoted in "Diary of a Man in Despair", Fritz Percy Reck-Malleczewen - History (1970) p. 95.

Two excellent Persian translations are available.
When the Ayatollah Dictates Poetry http://www.aawsat.net/2015/07/article55344336/when-the-ayatollah-dictates-poetry, Ashraq Al-Awsat (Jul 11, 2015).
The 5,000 Year Leap (1981)

Source: Reminiscences (1964), p. 418

Of his father
Sons Come and Go, Mothers Hang in Forever (1976)
Bias in Indian historiography (1980)

Source: 1910's, The Art of Noise', 1913, p. 5

“Get jailed, jump bail
Join the army, if you fail”
Song lyrics, Bringing It All Back Home (1965), Subterranean Homesick Blues

Nobel Address (1991)
Speech at Meeting of the Anjuman Tahaffuz Haquq-e-Nisvan, Lahore, April 1949, quoted in Speech of Mrs. Jinnah, p.10
Source: Speeches, Messages and Statements of Mohtarama Fatima Jinnah, Lahore, 1976, p. 10

2010s, Voting Democratic for the next 200 years (2014)

Reported in Robert Graves Good-bye to All That (1929), ch. 23.
Said during the First World War to a military tribunal assessing his claim to be treated as a conscientious objector. Variants along the lines of "I should try to interpose my body" are also sometimes quoted.
Source: Artists talks 1969 – 1977, p. 18
" http://www.jwz.org/blog/2014/04/the-awful-thing-about-getting-it-right-the-first-time-is-that-nobody-realizes-how-hard-it-was/" (About Ubuntu Bug)

Source: Reasonable Faith: Christian Truth and Apologetics (1994), pp. 35-36.
Your Job-Hunt Ltd – Advice from an Award-Winning Asian Headhunter (2003), Successful Recruitment in a Week (2012) https://books.google.ae/books?idp24GkAsgjGEC&printsecfrontcover&dqnigel+cumberland&hlen&saX&ved0ahUKEwjF75Xw0IHNAhULLcAKHazACBMQ6AEIGjAA#vonepage&qnigel%20cumberland&ffalse, 100 Things Successful People Do: Little Exercises for Successful Living (2016) https://books.google.ae/books?idnu0lCwAAQBAJ&dqnigel+cumberland&hlen&saX&ved0ahUKEwjF75Xw0IHNAhULLcAKHazACBMQ6AEIMjAE

TV Series and Specials (Includes DVDs), Trick of the Mind (2004–2006)
Address to the Pan Pacific HIV/AIDS Conference, Auckland, New Zealand, October 2005
Source: The evolution of socio-technical systems, (1981), p. 7

1920s, Ordered Liberty and World Peace (1924)

“What would you do if you could not fail. Answer that question and do that.”
Quoting his mother, in [Ray, Elaine, Cory Booker encourages students to use their moral imaginations to work for good, https://news.stanford.edu/thedish/2016/02/24/cory-booker-encourages-students-to-use-their-moral-imaginations-to-work-for-good/, Stanford University, 21 August 2018, February 24, 2016], as quoted in [Ross, Janell, Six noteworthy things about Cory Booker, https://www.washingtonpost.com/news/the-fix/wp/2016/07/25/six-noteworthy-things-about-cory-booker/?noredirect=on&utm_term=.8842f22736b9, 21 August 2018, The Washington Post, July 25, 2016]
2016

The Canton, Ohio Speech, Anti-War Speech (1918)

Source: Understanding International Conflicts: An Introduction to Theory and History (6th ed., 2006), Chapter 4, The Failure of Collective Security and World War II, p. 111.
The Triumph of the Therapeutic (1966)

The Guardian 26 October 2009. http://www.guardian.co.uk/commentisfree/2009/oct/26/charlie-brooker-sleeping-lessons
Guardian columns

On being appreciated by women — Net-a-Porter "Gillian Anderson on finding Scully again and her chemistry with David Duchovny" https://www.net-a-porter.com/magazine/333/11 (January 14, 2016)
2010s

Diari 1957-78, ed. Rizzoli, 26 September 1972.
1950s - 1990s

Mas greu veiretz fin' amansa
ses paor e ses doptansa,
c'ades tem om vas so c'ama, falhir,
per qu'eu no·m aus de parlar enardir.
"Ab joi mou lo vers e·l comens", line 13; translation by James H. Donalson. http://www.brindin.com/poven001.htm

Letter to George Washington (August 1778)

1960s, The Rising Tide of Racial Consciousnes (1960)
Variant: The non-violent resistors can summarize their message in the following simple terms: we will take direct action against injustice without waiting for other agencies to act. We will not obey unjust laws or submit to unjust practices. We will do this peacefully, openly and cheerfully because our aim is to persuade. We adopt the means of non-violence because our end is a community at peace with itself. We will try to persuade with our words, but if our words fail, we will try to persuade with our acts. We will always be willing to talk and seek fair compromise, but we are ready to suffer when necessary and even risk our lives to become witnesses to the truth as we see it.
Source: The Managerial Revolution, 1941, p. 281, as cited in: Albert Lepawsky (1949), Administration, p. 13-4

"Mi Retiro", st.6 - translated by Nick Joaquin.

Twitter post https://twitter.com/McCormickProf/status/929738167032451073 (12 November 2017)
2017

Speech to The Lions' Club, Brussels (24 January 1972), from The Common Market: Renegotiate or Come Out (Elliot Right Way Books, 1973), pp. 49-50
1970s

Quote by Nigel Farage on an article written by himself in the Telegraph, 6 July 2012. The time will never be right for David Cameron to hold a referendum on the EU. http://www.telegraph.co.uk/news/worldnews/europe/eu/9378567/The-time-will-never-be-right-for-David-Cameron-to-hold-a-referendum-on-the-EU.html
2012

“I fail to do
What I'm trying
I've been these walls
And everyone who dies
Hears other times”
In Rime
Lyrics, To Record Only Water for Ten Days (2000)

Part II. About painting : VI. The language of Form and Colour : Footnote
Similar quote in another translation:
There is no form, there is nothing in the world which says nothing. Often - it is true - the message does not reach our soul, either because it has no meaning in and for itself, or - as is more likely – because it has not been conveyed to the right place.. .Every serious work rings inwardly, like the calm and dignified words: 'Here I am!'
Partly cited in: Raymond Firth (2011) Symbols: Public and Private, p. 43
1910 - 1915, Concerning the Spiritual in Art, 1911

Mazurek, Maria (7 July 2017): Cudowna armia, która broni naszego ciała http://plus.gazetakrakowska.pl/magazyn/a/cudowna-armia-ktora-broni-naszego-ciala,12271571. Gazeta Krakowska (in Polish), pp. 18–19.

Hugh Kingsmill The Progress of a Biographer (1949) p. 7.
Criticism
It ought to preserve the memory of these with a certain discriminating measure of honor, trying to keep alive what was good in them and opposing the pragmatic verdict of the world.
"Up from Liberalism” Modern Age Vol. 3, No. 1 (Winter 1958-1959), p. 25, cols. 1-2.

Founding Address (1876)
“Nothing fails like success because we don't learn from it. We learn only from failure.”
Kenneth Boulding (1971) "The diminishing returns of science" in: New Scientist. (March 25, 1971) Vol. 49, nr. 744. p. 682
1970s
Context: Perhaps the most difficult ethical problem of the scientific community arises not so much from conflict with other subcultures as from its own success. Nothing fails like success because we don't learn from it. We learn only from failure.

“The worse government fails, the less privacy citizens supposedly deserve.”
From Terrorism & Tyranny: Trampling Freedom, Justice and Peace to Rid the World of Evil (Palgrave, 2003) http://www.jimbovard.com/Epigrams%20page%20Terrorism%20&%20Tyranny.htm

Go Rin No Sho (1645), Introduction

“If we fail to prepare, we prepare to fail.”
Fail to prepare; prepare to fail.
By failing to prepare, you are preparing to fail.
Attributed to Franklin in Julita Agustin-Israel, Lakas ng Loob, 1996, p. 53 https://books.google.com/books?id=2Z59AAAAMAAJ&q=prepare; there is no evidence that he coined any forms of this quote.
Misattributed

2010s, Diversity: History's Pathway to Chaos (2016)

2010 Senate Campaign, Remarks regarding Christopher Dodd

Pouf Positive
Untold Decades: Seven Comedies of Gay Romance (1988)

Capriles Radonski send a message to Chavez http://www.eluniversal.com/nacional-y-politica/121004/capriles-to-chavez-you-will-not-stop-the-advance-of-the-people (4 October 2012).

On the USA, said during his exile in Peking, as quoted by Oriana Fallaci (June 1973), Intervista con la Storia (sixth edition, 2011). page 112.
Interviews

Commencement speech http://news-service.stanford.edu/news/2007/june20/gradtrans-062007.html, Stanford University (2007-06-17)
Speeches and lectures