Monument inscription, British History Online: Cheam http://www.british-history.ac.uk/report.aspx?compid=45375.
About
Quotes about loss
page 5
Source: Theory and Practice of Muslim State in India (1999), Chapter 7

And it is.
"Garrison Keillor: God help us. We’re in trouble down here." in The Washington Post (26 July 2016) https://www.washingtonpost.com/opinions/god-help-us-were-in-trouble-down-here/2016/07/26/989cde08-535d-11e6-b7de-dfe509430c39_story.html

1920s, Second State of the Union Address (1924)

“Yet all does the sire himself ruthlessly condemn to the murky flames, and bid his own signs of rank be borne withal, if by their loss he may sate his devouring grief.”
Cuncta ignibus atris
damnat atrox suaque ipse parens gestamina ferri,
si damnis rabidum queat exaturare dolorem.
Source: Thebaid, Book VI, Line 81 (tr. J. H. Mozley)
Source: On Human Communication (1957), Words and Meaning: Semantics, p.122

City of Truth as reprinted in Nebula Awards 28, p. 257
Short fiction

Quoted on BBC News, "Afghanistan's Hamid Karzai says Nato caused 'great suffering'" http://www.bbc.co.uk/news/world-24433433, (October 7, 2013).
2013
“I was going to buy a book on hair loss, but the pages kept falling out.”
One-liners

Tarikh-i-Firishta, translated into English by John Briggs under the title History of the Rise of the Mahomedan Power in India, 4 Volumes, New Delhi Reprint, 1981. p. 263 Vol I.
Variant: From thence the King marched towards the mountains of Nagrakote, where he was overtaken by a storm of hail and snow. The Raja of Nagrakote, after sustaining some loss, submitted, but was restored to his dominions. The name of Nagrakote was, on this occasion, changed to that of Mahomedabad, in honour of the late king. Some historians state, that Feroze, on this occasion, broke the idols of Nagrakote, and mixing the fragments with pieces of cows flesh, filled bags with them, and caused them to be tied round the necks of Bramins, who were then paraded through the camp. It is said, also, that he sent the image of Nowshaba to Mecca, to be thrown on the road, that it might be trodden under foot by the pilgrims, and that he also remitted the sum of 100,000 tunkas, to be distributed among the devotees and servants of the temple.

2010s, Open letter to Khizr M. Khan (31 July 2016)
"Facebook" (20 November 2017)

Book Review: Allegiant by Veronica Roth, Parkin, Lisa, Read. Breathe. Relax., October 28, 2013, November 4, 2013 http://www.readbreatherelax.com/book-review-allegiant-by-veronica-roth/,
About

As quoted in With Snow on Their Boots : The Tragic Odyssey of the Russian Expeditionary Force in France During World War I (1999) by Jamie H. Cockfield, p. 28
Undated

Source: Everything Belongs: The Gift of Contemplative Prayer (1999), p. 85-86

Quote in his letter to brother Theo, from Arles, France, Jan. 1889; as quoted in Vincent van Gogh, edited by Alfred H. Barr; Museum of Modern Art, New York, 1935 https://www.moma.org/documents/moma_catalogue_1996_300061887.pdf, (letter 569), p 24
Vincent wrote this letter about two weeks after his first attack, during which he had cut off his ear
1880s, 1889

"Advice to a Lady in Autumn", published in A Collection of Poems in Six Volumes. By Several Hands. Vol. I. (1763), printed by J. Hughs, for R. and J. Dodsley
Source: Assigning Meanings to Programs http://www.cs.virginia.edu/~weimer/2007-615/reading/FloydMeaning.pdf (1967), p. 25.

Ants Marching
Remember Two Things (1993)

“The loss of one lion alone drew a tear from mighty Caesar's eye.”
Magni quod Caesaris ora...
unius amissi tetigit jactura leonis.
v, line 27 (tr. J. H. Mozley)
Silvae, Book II

Go Rin No Sho (1645), The Fire Book

Source: Veganist: Lose Weight, Get Healthy, Change the World (2011), p. 3

Question http://hansard.millbanksystems.com/commons/1989/feb/08/public-libraries in the House of Commons (8 February 1989).
1980s

2000s, 2007, Virginia Tech Prayer Vigil (April 2007)

https://twitter.com/realDonaldTrump/status/803567993036754944, quoted in * 2019-10-29 When They Come for You: How Police and Government Are Trampling Our Liberties - and How to Take Them Back David Kirby St. Martin's Press 1466870052
Ref: en.wikiquote.org - Donald Trump / Quotes / Donald Trump on social media / Twitter
2010s, 2016, November

Reg. v. Ramsay and Foote (1883), 15 Cox, C. C. 235.

This is also from the 1965 essay by Justice Millard Caldwell http://www.aapsonline.org/brochures/cicero.htm. It is not clear if this is based in any specific dialogue.
Misattributed

“Victor I will remain
Or on this earth lie slain,
Never shall she sustain
Loss to redeem me.”
Source: To the Cambro-Britons and Their Harp, his Ballad of Agincourt (1627), Lines 37-40.

The impossible task of fixing Apple http://tgdaily.com/opinion-features/70874-the-impossible-task-of-fixing-apple in TG Daily (10 April 2013)

Book I, Note II, p. 19
Les confidences (1849)

1850s, Latter-Day Pamphlets (1850), Model Prisons (March 1, 1850)
“Life is brutal that way…the loss of irrecoverable moments amid trivia and distraction.”
Source: Endymion (1996), Chapter 60 (p. 561)
Memorial inscription, reported in Edward Foss, The Judges of England, With Sketches of Their Lives (1864), Volume 8, p. 266-268.
About

Page 81
2000s, Promises to Keep (2008)

1820s, Signs of the Times (1829)
Indian Muslims: Who Are They (1990)
General System Theory (1968), 4. Advances in General Systems Theory
Preface p. iv-v
A Treatise on Isoperimetrical Problems, and the Calculus of Variations (1810)
"A Lesson from the Old Masters", p. 195
Leonardo's Mountain of Clams and the Diet of Worms (1998)

Richard Kalich in conversation with Lucy Sweeney Byrne - Books Go Social http://booksgosocial.com/2015/01/13/richard-kalich-in-conversation-with-lucy-sweeney-byrne/ January 13, 2015.
Thomas A. Kochan in: "An interview with Thomas A. Kochan," in: Harvard Magazine, Sept. 2012. online at harvardmagazine.com.

Introduction to Public Policy (2011), Ch. 5 : Evaluating Social Welfare

Source: A Woman's Thoughts About Women (1858), Ch. 10

Source: 1840s, Three Discourses on Imagined Occasions (1845), p. 48

2000s, The Sacred Warrior (2000)
Source: The Rise of Endymion (1997), Chapter 18 (pp. 348-349)

The Origins of Knowledge and Imagination (1978)

Address at a Swedish Colonial Society luncheon in Philadelphia (9 April 2001).
Books, articles, and speeches

2005 Chairman's Letter http://www.berkshirehathaway.com/letters/2005.html
Letters to Shareholders (1957 - 2012)

Letter that he wrote to his older brother Seshama Raju (1947) [Better dating and sourcing of any publication would be useful here]
Broken Lights Letters 1951-59.

Speech in 1798, quoted in Wendy Hinde, George Canning (London: Purnell Books Services, 1973), p. 66.

Source: 1950s, The development of operations research as a science, 1956, p. 270.
Hindu Temples – What Happened to Them, Volume I (1990)

“I have terrible short-term memory loss, which I like to think of as Presidential eligibility.”
" Paula Poundstone: Look What the Cat Dragged In http://www.imdb.com/title/tt0896560/", Bravo channel, November 7, 2006.

Inaugural address (4 March 1857).

“In short, enjoy the blessing of strength while you have it and do not bewail it when it is gone, unless, forsooth, you believe that youth must lament the loss of infancy, or early manhood the passing of youth. Life's race-course is fixed; Nature has only a single path and that path is run but once, and to each stage of existence has been allotted its own appropriate quality; so that the weakness of childhood, the impetuosity of youth, the seriousness of middle life, the maturity of old age—each bears some of Nature's fruit, which must be garnered in its own season.”
Denique isto bono utare, dum adsit, cum absit, ne requiras: nisi forte adulescentes pueritiam, paulum aetate progressi adulescentiam debent requirere. cursus est certus aetatis et una via naturae eaque simplex, suaque cuique parti aetatis tempestivitas est data, ut et infirmitas puerorum et ferocitas iuvenum et gravitas iam constantis aetatis et senectutis maturitas naturale quiddam habet, quod suo tempore percipi debeat.
section 33 http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A2007.01.0039%3Asection%3D33
Cato Maior de Senectute – On Old Age (44 BC)

“We may fill our purses, but we pay a heavy price for it in the loss of picturesqueness and beauty.”
Source: James Nasmyth engineer, 1883, p. 153 (in 2010 edition)

“Take care to sell your horse before he dies.
The art of life is passing losses on.”
"The Ingenuities of Debt
1940s

Progress, Coexistence and Intellectual Freedom (1968), Dangers, The Threat to Intellectual Freedom

Chakravarti Rajagopalachari (1960) The voice of the uninvolved: speeches and statements on atomic warfare and test explosions. p. 167
“No suffering can be foreign to a Christian, not even the anguish that comes with the loss of God.”
The Gospel of Christian Atheism (1966), p. 23

Opinion: Clinton or Trump – Better or Less Bad? http://english.aawsat.com/2016/11/article55361471/opinion-clinton-trump-better-less-bad, Ashraq Al-Awsat (November 4, 2016)
Source: Social Costs of Business Enterprise, 1963, p. 12. Cited in: M. Rangone & S. Solari (2012) "Southern European capitalism and the social costs of business enterprise". in: Studi e Note di Economia, Anno XVII, n. 1-2012, pp. 3-28

On Tanzania's mining sector.
Interviews, Interview with Financial Times, 2007-10-04 http://www.ft.com/cms/s/0/d8a07e28-72a3-11dc-b7ff-0000779fd2ac.html?nclick_check1/

"Love, Poverty and War" http://www.frontpagemag.com/Articles/Read.aspx?GUID=C78DC231-4599-4745-9CA5-A398398916A0, FrontPageMagazine.com (2004-12-29): On Noam Chomsky
2000s, 2004
Source: The Executive in Action, 1945, p. 3-4, as cited in Albert Lepawsky (1949), Administration, p. 419

Kunti to Madri
The Mahabharata/Book 1: Adi Parva/Section CXXIV

Pétur Þríhross
Heimsljós (World Light) (1940), Book Two: The Palace of the Summerland
[Assessing and monitoring forest biodiversity: a suggested framework and indicators, Forest Ecology and Management, 115, 2–3, 22 March 1999, 135–146, https://www.sciencedirect.com/science/article/pii/S0378112798003946] (quote from p. 135)
“Consciously risk the loss of something before losing it, and you will lose the fear of losing it.”
1500 Ways to Escape the Human Jungle
Source: The Human Form: Sculpture, Prints, and Drawings, 1977, p. 8.
March 27, 1968, page 208.
Official Report of Proceedings of the Hong Kong Legislative Council
History of Hindu-Christian Encounters (1996)

Tarikh-i Hindi by Rustam ‘Ali. In The History of India as Told by its own Historians. The Posthumous Papers of the Late Sir H. M. Elliot. John Dowson, ed. 1st ed. 1867. 2nd ed., Calcutta: Susil Gupta, 1956, vol. 22, pp. 37-67. https://www.infinityfoundation.com/mandala/h_es/h_es_tarikh-i5_frameset.htm

Brown : The Last Discovery of America (2003)