Source: Irrational Man: A Study in Existential Philosophy (1958), Chapter Two, The Encounter With Nothingness, p. 26
Quotes about calculation
page 2
Time and the Art of Living (1982)

Lecture at Kings College (1862) as quoted by F. V. Jones, "The Man Who Paved the Way for Wireless," New Scientist (Nov 1, 1979) p. 348 & Andrey Vyshedskiy, On The Origin Of The Human Mind 2nd edition

Viktor Schauberger in a letter to Hermann Jaeger, 31st October 1957, Implosion Magazine, No. 103, p. 20 (Callum Coats: Energy Evolution (2000))
Implosion Magazine
December “A ROOST FOR CHICKENS”
The Sheep Look Up (1972)

“…the more accurate the calculations became, the more the concepts tended to vanish into thin air.”
about using old-fashioned chemistry to describe molecular structure, in Molecular Scientists and Molecular Science: Some Reminiscences, J. Chem. Phys. 43, S2 (1965).

During 2017 coup d'etat, as quoted in Xinhua http://www.xinhuanet.com/english/2017-11/20/c_136765770.htm
2010s

p, 125
Astronomical Observations relating to the Construction of the Heavens... (1811)

R. C. Majumdar, The History and Culture of Indian People. Vol. X, 2nd ed., Bombay, 1981, p. 152-153.
Façade of Democracy (1991)
1770s, Letter to Robert Pleasants (1773)

Source: The Plot: The Secret Story of the Protocols of the Elders of Zion (10/2/2005), p.84
Source: An Introduction to Cybernetics (1956), Part 3: Regulation and control, p. 260

17 U.S. (4 Wheaton) 316, 423. Regarding the Supreme Courts judicial review power in the context of the Necessary and Proper Clause.
McCulloch v. Maryland (1819)
Turning physicists into quantum mechanics (2007)

Facebook Nation: Total Information Awareness (2nd Edition), 2014

Vol. 2, bk. 7, ch. 5
Enquiry Concerning Political Justice (1793)

Les Oeuvres De Mr. De Maupertuis (1752) vol. iv p. 22; as quoted by Philip Edward Bertrand Jourdain, The Principle of Least Action (1913) p. 6.

Edward Mailly, Essai sur la vie et les ouv rages de Quetelet in the Annuaire de Vacadimie royale des sciences des lettres et des beaux-arts de Belgique (1875) Vol. xli pp. 109-297 found also in "Conclusions" of Instructions populaires sur le calcul des probabilités p. 230
(from 2012 essay Catching Up with Our Humanity).
From Articles, Essays, and Poems, On Guerrilla Decontextualization

Excerpted from Chapter 11 "The Profession of Engineering"
The Memoirs of Herbert Hoover: Years of Adventure, 1874-1929 (1951)
History of Heroic Hindu Resistance to Early Muslim Invaders (1984; 2001)

Prefatory Remarks to Collected Essays in the Sociology of Religion (1920)

The Construction of the Wonderful Canon of Logarithms (1889)

Prime Minister's website http://web.archive.org/20051103003809/www.number10.gov.uk/output/Page7314.asp
11 March 2005, at the launch of the Commission for Africa Report.
2000s

State of the Art (2000)

Instructions populaires sur le calcul des probability (1825) English translation by R. Beamish (1839)

Letter from Vincent van Gogh to Theo, from The Hague, c. 11 January 1883; as cited in Dear Theo: the Autobiography of Vincent Van Gogh; ed. Irving Stone and Jean Stone (1995), ISBN 0452275040
1880s, 1883

On why entertainment celebrities tend to favor the Democratic Party, as quoted in "Ted Nugent blasts Matt Damon on Palin" in The Christian Science Monitor (18 September 2008) http://features.csmonitor.com/politics/2008/09/16/ted-nugent-blasts-matt-damon-on-palin/

This portion of Parker's sermon is thought to have inspired Martin Luther King, Jr.'s famous assertion of similar sentiments: "The arc of the moral universe is long, but it bends towards justice".
Ten Sermons of Religion (1853), III : Of Justice and the Conscience https://en.wikisource.org/wiki/Ten_Sermons_of_Religion/Of_Justice_and_the_Conscience
Source: Group Theory in the Bedroom (2008), Chapter 7, On The Teeth Of Wheels, p. 138

Retrospect of criticisms of the theory of natural selection. In Evolution as a Process, eds. J.S.Huxley, A.C.Hardy and E.B.Ford, London: Allen and Unwin, 1954.
1950s
As quoted in "Military air power : the CADRE digest of air power opinions and thoughts", compiled by Charles M. Westenhoff

Source: The End of Science (1996), p. 66
context (8) “Isolation”
Stand on Zanzibar (1968)

You would have thought that the treasures of the kings of all the inhabited world had come into their possession'
Gujarat. Elliot and Dowson, Vol. II : Elliot and Dowson, History of India as told by its own Historians, 8 Volumes, Allahabad Reprint, 1964. pp. 228-230. https://archive.org/stream/cu31924073036729#page/n5/mode/2up Also quoted in Jain, Meenakshi (2011). The India they saw: Foreign accounts.

Il est un temps où le courage et l'audace tranquilles deviennent pour un peuple aux moments clés de son existence la seule forme de prudence convenable. S'il n'accepte pas alors le risque calculé des grandes étapes, il peut manquer sa carrière à tout jamais, exactement comme l'homme qui a peur de la vie.
On the plaque in front of his statue on the hill of the National Assembly of Quebec.

"On three fronts" (3 August 1938) as quoted in * Rebirth and Destiny of Israel
1954
91
Philosophical Library
New York.

“Words calculated to catch everyone may catch no one.”
Address to the Democratic National Convention, Chicago, Illinois. (21 July 1952); published in Speeches of Adlai Stevenson (1952)

God doesn't believe in atheists (2002)

“You calculated how to be uncalculating, and are natural by art!”
The Hand of Ethelberta (1876), ch. 20

Quote of Mondrian in a letter to H. P. Bremmer, Paris 29 January 1914; ; as cited in Mondrian, - The Art of Destruction, Carel Blotkamp, Reaktion Books LTD. London 2001, p. 81
1910's
“The Phaedrus and the Nature of Rhetoric,” pp. 6-7.
The Ethics of Rhetoric (1953)
Source: The Mind Of The Strategist, 1982, p. 12

Song lyrics, Aerial (2005), A Sea of Honey (Disc 1)

Unknown source, often attributed to The Woman Rebel.
Misattributed

On the Hypotheses which lie at the Bases of Geometry (1873)
Source: Lectures on Teaching, (1906), pp. 267-268.
Source: Agendas, Alternatives, and Public Policies - (Second Edition), Chapter 4, Processes: Origins, Rationality, Incrementalism, and Garbage Cans, p. 80
Source: The State and Economic Stagnation in Tropical Africa, p. 320

Antony Flew, "The Terrors of Islam", Atheist Notes No. 6, 2004, ISBN 1856372928

Source: A Woman's Thoughts About Women (1858), Ch. 10
Henri Poincaré, Critic of Crisis: Reflections on His Universe of Discourse (1954), Ch. 2. The Age of Innocence

Source: An Essay on The Principle of Population (First Edition 1798, unrevised), Chapter IV, paragraph 13, lines 11-15

Speech to the United States Senate http://friesian.com/antiam.htm (24 February 2014).
2010s, 2014

Quote in: Undated letters to Jackson, in The Letters of Thomas Gainsborough, ed. Mary Woodall, 1961
undated, Undated letters to William Jackson

Major Pierre Ducos, p. 233
Sharpe (Novel Series), Sharpe's Honor (1985)

4 February 2005
http://www.snopes.com/politics/bush/muddled.asp
2000s, 2005

Source: The Tales of Alvin Maker, Prentice Alvin (1989), Chapter 1.
Introduction, The Nature of Probability Theory, p. 3.
An Introduction To Probability Theory And Its Applications (Third Edition)

Speech at a meeting of the Council of the Anti-Corn Law League held in Manchester Town Hall (2 July 1846), quoted in G. M. Trevelyan, The Life of John Bright (London: Constable, 1913), pp. 150-151.
1840s
Hasan Nizami, quoted from Goel, Sita Ram (2001). The story of Islamic imperialism in India. ISBN 9788185990231 Ch. 6

"The Forty Rules of Love" (2010) by Elif Şafak (The book is about Rumi, but the quote is the author's own words)
Misattributed

The Tragic Sense of Life (1913), Conclusion : Don Quixote in the Contemporary European Tragi-Comedy

Facebook, March 18, 2016 https://www.facebook.com/mittromney/posts/10153370698696121
2016

Book IV, Note VIII, p. 60
Les confidences (1849)

cited in: John J. O'Connor & Edmund F.; Robertson (2003) " George Dantzig http://www-history.mcs.st-and.ac.uk/Biographies/Dantzig_George.html". in: MacTutor History of Mathematics archive, University of St Andrews.
Linear programming and extensions (1963)

Attributed without citation at John Cale - Quotes, xs4all.nl, 16 November 2012 http://werksman.home.xs4all.nl/cale/quotes/index.html,

original text by Israëls
In a letter from The Hague, 26 August 1872, to his friend and colleague George Reid in Edinburgh; as cited in Jozef Israëls, 1824 – 1911, ed. Dieuwertje Dekkers; Waanders, Zwolle 1999, p. 363
Quotes of Jozef Israels, 1871 - 1900

As quoted in Sam Houston (2004), by James Haley, University of Oklahoma Press
1860s

Quote in Delacroix' letter to Philippe Burty, 1 March 1862; as quoted in Letters of the great artists – from Blake to Pollock, Richard Friedenthal, Thames and Hudson, London, 1963, p. 76
Delacroix describes the source of his series Faust lithographs
1831 - 1863