Source: Philosophy and Real Politics (2008), p. 39.
Quotes about form
page 21

Les mathématiciens n'étudient pas des objets, mais des relations entre les objets ; il leur est donc indifférent de remplacer ces objets par d'autres, pourvu que les relations ne changent pas. La matière ne leur importe pas, la forme seule les intéresse.
Source: Science and Hypothesis (1901), Ch. II: Dover abridged edition (1952), p. 20

Dictionary of National Biography, art. "William Shakespeare"
The Paradigms of Programming (1979)
10 October 2013
Special Interview by People' Daily, Europe Edition
Source: Don't Drink Your Milk! (1983), p. 3

Lord Bolingbroke's Philosophical Works http://books.google.com/books?id=E6ATAAAAQAAJ (1754) Vol.III, Essay IV, Sect XVI
“The religions are delusional constructs formed around an infallible core.”
Source: Echoes from the Bottomless Well (1985), p. 74

Auguste Rodin in: The Cornhill Magazine, (1925), p. 766; Cited in: Anthony Mario Ludovici (1926). Personal Reminiscences of Auguste Rodin. p. 111
1900s-1940s

as quoted in: Marc Chagall, – a Biography, Sidney Alexander, Cassell, London, 1978, p. 178
1910 - 1920

Source: Natural Theology (1802), Ch. 26 : The Goodness of the Deity.

Source: 1940s, Male and Female (1949), p. 84 as cited in: John Whiting, Eleanor Hollenberg Chasdi, Roy D'Andrade (2006) Culture and Human Development: The Selected Papers of John Whiting. p. 240
"How It Was", page 55
Beyond the Wall: Essays from the Outside (1984)
1950s, Tradition and Identity' (1959)

"The Address of the Southern and Western Liberty Convention" http://alexpeak.com/twr/libertyparty/saw/, in Anti-slavery Addresses of 1844 and 1845 by Salmon Portland Chase and Charles Dexter Cleveland, ed. C. D. C. (London: Sampson Low, Son, and Martson, 1867), pp. 75–125.

Waiting on God (1950), Reflections on the Right Use of School Studies with a View to the Love of God

1920s, Freedom and its Obligations (1924)

Bias, Blindness and How We Truly Think (Part 4): Daniel Kahneman, bloomberg.com, 24 October 2011, 15 May 2014 http://www.bloomberg.com/news/2011-10-27/bias-blindness-and-how-we-truly-think-part-4-daniel-kahneman.html,
"Bias, Blindness and How We Truly Think" (2011)
The Owner Built Home: A How-to-do-it Book (1972)
The Iron Fist Behind the Invisible Hand (2002)

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 91.
Source: Outside Ethics (2005), p. 8.

“A talent is formed in stillness, a character in the world's torrent.”
Torquato Tasso, Act I, sc. ii (1790)
Source: The Human Form: Sculpture, Prints, and Drawings, 1977, p. 7.
They Thought They Were Free: The Germans, 1933-35 (1955)

In 'La mort tient le volant...', in La ville charnelle, E. Sansot, Paris 1908, p. 228; as quoted in Inventing Futurism: The Art and Politics of Artificial Optimism, by Christine Poggi, Princeton University Press, 2009, p. 27, (note 77)
1900's

Some People Push Back: On the Justice of Roosting Chickens http://www.kersplebedeb.com/mystuff/s11/churchill.html, September 12, 2001

New York Times Talks Panel (20 April 2009) http://www.youtube.com/watch?v=oeZgJ3EJrbE.
Elements of Indian Art (2002)

In response to the question, "You're well known for not wanting to impose interpretations on your films. Is this because you believe that audiences have become accustomed to being spoon-fed and told what to think?"
as interviewed by Richard Porton, "Collective Guilt and Individual Responsibility: An Interview with Michael Haneke," Cineaste, Vol. 31, No. 1 (Winter 2005), pp. 50-51

Quote in his letter to John Dunthorne (14 February 1814), as quoted in Constable (Tate Gallery Publications, London, 1993), p. 151
1800s - 1810s

subsequently merged
Source: The Invisible Bankers, Everything The Insurance Industry Never Wanted You To Know (1982), Chapter 14, Too Many Salesman, p. 250.

"The Spanish Element in Our Nationality," http://www.bartleby.com/229/5004.html letter to the Philadelphia Press (20 July 1883), later published in The Complete Prose Works of Walt Whitman (1892), part V: November Boughs

Source: Why We Fail as Christians (1919), p. 74

No, it took a long time for people to die. People would be running and fighting for higher ground. As that got more and more rare as the water keeps coming up, and up, and up, for 150 days, the water increased. By the way, they are still discovering chunks of ice flying around in space.
Creation seminars (2003-2005), The Hovind theory

Source: Moral Consciousness and Communicative Action (1983), p. 5

About the Basic Law proposal: Israel as the Nation-State of the Jewish People, Today, I Am Ashamed to Be an Israeli https://www.haaretz.com/israel-news/.premium-today-i-am-ashamed-to-be-an-israeli-1.6294754 (July 22, 2018), '.

In Address to the International Diplomats Address to the International Diplomats http://www.vatican.va/holy_father/benedict_xvi/speeches/2006/march/documents/hf_ben-xvi_spe_20060318_intern-organizations_en.html (18 March 2006)
2006

The Plot: The Secret Story of the Protocols of the Elders of Zion (10/2/2005)

Letter to George Washington (November 1779)

Sylvester Graham's Lectures on the Science of Human Life https://books.google.it/books?id=nRwDAAAAQAAJ, condensed by T. Baker, Manchester: John Heywood, 1881, p. 76.
The Impartial Spectator: Adam Smith's Moral Philosophy (2007), Ch. 1: Two Versions

Quoted in C.R. Leslie, Memoirs of the Life of John Constable, Composed Chiefly of His Letters (1843), (Phaidon, London, 1951), p. 280
Reply "to a lady who, looking at an engraving of a house, called it an ugly thing"
posthumous, undated

and so on up to twenty-eight
Vishnu Purana (Book 3, Ch 3), in The Vishńu Puráńa: A System of Hindu Mythology and Tradition http://books.google.co.in/books?id=bkEpAAAAYAAJ, p. 219.
Sources

Letter to George Washington (November 1779)

Religion and Philosophy in Germany, A fragment https://archive.org/stream/religionandphilo011616mbp#page/n5/mode/2up, p. 26

Speech at the New England Woman Suffrage Association (May 24, 1886) Nicholas Buccola, edit., The Essential Douglass: Selected Writings & Speeches, Hackett Publishing Company, 2016, p. 307. Sometimes referred to as his “Who and What is Woman?” speech
1880s

Jörg Immendorff (1976), as cited in: William Packer. " Obituary: Jörg Immendorff http://www.guardian.co.uk/obituaries/story/0,,2101396,00.html," The Guardian, 13 June 2007
Hindu View of Christianity and Islam (1992)
Sir Hermann Bondi, "Review of Cosmology," Monthly Notices of the Royal Astronomical Society 1948, p. 107-8, as cited in: Hermann Friedmann. Wissenschaft und Symbol, Biederstein, 1949, p. 472

The Temple of Nature (1802).
Source: The Ape that Thought It Was a Peacock: Does Evolutionary Psychology Exaggerate Human Sex Differences? (2013), p. 145

Dijkstra (1973) in personal communication to Donald Knuth, quoted in Knuth's "Structured Programming with go to Statements".
1970s

Vol. 3, Pg. 268, Translated by W.P. Dickson
The History of Rome - Volume 3

Anecdotes of Oyasama, Foundress of Tenrikyo, from Anecdote 17, "The Law of Nature," p. 13.
Anecdotes of Oyasama

The latter, more detached than the former from definite objects, tries to bring about ever new opportunities for *Schadenfreude*.
Das Ressentiment im Aufbau der Moralen (1912)

Life Without and Life Within (1859), The One In All
The Civil War: A Narrative, Volume 1: Fort Sumter to Perryville (1958)

Source: Main Currents Of Marxism (1978), Three Volume edition, Volume I, The Founders, pp. 120-1
Source: Nothing Is Sacred (2002), p. 29

On the Hypotheses which lie at the Bases of Geometry (1873)

Arp's quote from his text in a catalogue of his exhibition, in Zürich 1915; quoted by Arp himself in his text 'Abstract Art, Concrete Art,' Hans Arp, c. 1942; as quoted in Theories of Modern Art: A Source Book by Artists and Critics, by Herschel Browning Chipp, Peter Selz, p. 390
1910-20s

There is no 'must' in art, which is forever free.
Quote from: Kandinsky: Complete Writings on Art, eds. Kenneth C. Lindsay and Peter Vergo, 2 Vols. (transl. Peter Vergo); Boston: G.K. Hall & Co., (1982), p. 195; as cited in: Samet, Jennifer Sachs. Painterly Representation in New York, 1945-1975. Dissertation, The City University of New York, 2010. p. 25
1910 - 1915
Chick tracts, " Who Murdered Clarice? http://www.chick.com/reading/tracts/1009/1009_01.asp" (2000)
Source: Projective methods for the study of personality (1939), p. 402-403; As cited in: Edwin Inglee Megargee, Charles Donald Spielberger (1992) Personality assessment in America: a retrospective on the occasion of the fiftieth anniversary of the Society for Personality Assessment. p. 20-21
Overview: Castles in Context
Medieval castles (2005)