Robinson in his 1849 adress, as quoted in the Report of the Nineteenth Meeting of the British Association for the Advancement of Science https://archive.org/stream/report36sciegoog#page/n50/mode/2up, London, 1850.
Quotes about form
page 52

1860s, Our Composite Nationality (1869)

Thomas Jefferson, letter to Charles McPherson, February 25, 1773, cited from H. A. Washington (ed.) The Writings of Thomas Jefferson (Washington, D.C.: Taylor & Maury, 1853) vol. 1, pp. 195-6.
Criticism

On specialization, Nothing is Too Wonderful to be True (1995)
Martin Seymour-Smith Guide to Modern World Literature (London: Hodder & Stoughton, [1973] 1975) vol. 1, p. 389.
Criticism
Source: Sincerity and Authenticity (1972), p. 123

Miscellaneous Works and Correspondence (1832), To Mr. Cleveland Secretary of the Admiralty (April 14, 1760)

Source: New Testament and Mythology and Other Basic Writings (1941), p. 3
Source: The Administrative State, 1948, p. 22-23

Ann Druyan – from her video podcast At Home in the Cosmos with Annie Druyan. — OVGuide. "Ann Druyan – A Plea for a Change in the Marijuana Laws Video" http://www.ovguide.com/ann-druyan-9202a8c04000641f8000000000008b85 (Podcast). published by Ann Druyan. Retrieved 2013-10-02.
Multi-Parties political platform (25 June 2013)
"Loop Quantum Gravity," The New Humanists: Science at the Edge (2003)

"Rational Rationing vs. Irrational Rationing" http://www.huffingtonpost.com/jacob-m-appel/rational-rationing-vs-irr_b_622057.html, The Huffington Post (2010-06-23)

Source: The Characteristics of the Present Age (1806), p. 16

1 Cor 13:6
2009, Cartias in Vertitate (29 June 2009)

Listen, Marxist!

Source: The Principles of Art (1938), p. 269

"The Scientific Revolution and the Machine"
The Common Sense of Science (1951)
Cited in: Lyndall Fownes Urwick, Edward Franz Leopold Brech (1961), The Making of Scientific Management: The Hawthorne investigations https://archive.org/stream/makingofscientif032926mbp#page/n191/mode/2up. p. 166-167
Management and the worker, 1939
Source: 1940 - 1950, The Plasmic Image 1. 1943-1945, p. 139

Joint statement with https://www.usatoday.com/story/news/politics/onpolitics/2017/08/16/republicans-denounce-charlottesville-violence-president-trump-comments/572378001/ George H. W. Bush (August 2017), as quoted in "Politics: Both Bush presidents just spoke out on Charlottesville — and sound nothing like Trump" https://www.washingtonpost.com/news/politics/wp/2017/08/16/both-bush-presidents-just-spoke-out-on-charlottesville-and-sound-nothing-like-trump/?utm_term=.0ef03a83ed2f (16 August 2017), by Cleve R. Wootson Jr., The Washington Post
2010s, 2017
Source: Organizations and Environments, 1979, p. 40; cited in: Frank Marutollo (1990). Organizational Behavior in the Marine Corps. p. 33

Lucifer http://www.katinkahesselink.net/squote/l37.html (February 1888)

Cognitive Surplus : Creativity and Generosity in a Connected Age (2010)

translation from the original Dutch, Fons Heijnsbroek
version in original Dutch (citaat van Breitner's brief, in het Nederlands:) Maar ook voor hem die Parijs op latere leeftijd voor het eerst betreedt, gebeurt er iets ongewoons in zijn leven.. ..er gaat voor de mensch van leeftijd een licht op, een licht waarin hij de droomgestalten van zijn leven tot meer tastbare vastere vormen ziet verwezenlijkt. Want die stad heeft onze moderne cultuur geschapen en de bewegingen van het leven in de meeste landen een reflex van die, welke in Frankrijks hoofdstad een aanvang nemen.
Quote of Breitner, after 1884 (when he visited Paris); as cited by Frans Erens, in Vervlogen jaren; De Arbeiderspers, Zwolle 1958, p. 98
undated quotes
“I want color and form to have contradictorily functions.”
Quote from: 'Albers Paints a Picture' Elaine de Kooning, Art News 49, November 1950, p. 57; as quoted in Abstract Expressionist Painting in America, W.C, Seitz, Cambridge Massachusetts, 1983, p. 67

1960s, I am Prepared to Die (1964)

Source: Vamps and Tramps (1994), "No Law in the Arena: A Pagan Theory of Sexuality", p. 35
Source: How Europe Underdeveloped Africa (1972), p. 63.

“And should you visit now the seats of bliss,
You need not wear another form but this.”
To Madam L. E. on her Recovery, 116; reported in Hoyt's New Cyclopedia Of Practical Quotations (1922).

pp. 193–195 https://archive.org/stream/ChristianityAndEvolution/Christianity_and_Evolution#page/n191/mode/2up
Christianity and Evolution (1969)

From AGU – the cause of Aurora Borealis and TSI questions http://wattsupwiththat.com/2007/12/15/from-agu-confirming-the-cause-of-aurora-borealis/, wattsupwiththat.com, December 15, 2007.
2007

Source: Hours of Thought on Sacred Things (1879), p. 190.

kiṃ dṛṣṭavyaṃ patitajagati vyāptadoṣe'pyasatye
māyācārāvratatanubhṛtāṃ pāparājadvicāre ।
dṛṣṭavyo'sau cikuranikuraiḥ pūrṇavaktrāravindaḥ
pūrṇānando dhṛtaśiśutanuḥ rāmacandro mukundaḥ ॥
[Aneja, Mukta, J. K., Kaul, Abraham, George, 2005, Abilities Redefined – Forty Life Stories Of Courage And Accomplishment, All India Confederation of the Blind, Delhi, India, Shri Ram Bhadracharyaji – A Religious Head With A Vision, http://www.aicb.in/images/success_story.pdf, 25 April 2011, 66–68]
[Nagar, Shanti Lal, The Holy Journey of a Divine Saint: Being the English Rendering of Swarnayatra Abhinandan Granth, Acharya Divakar, Sharma, Siva Kumar, Goyal, Surendra Sharma, Susila, B. R. Publishing Corporation, First, Hardback, New Delhi, India, 2002, 8176462888]
Notebook entry (1946), published in Partisan Review: 50th Anniversary Edition, ed. William Philips (1985)

Traité des reliques http://www.gutenberg.org/files/32136/32136-h/32136-h.html, translators: Krasinski, Valerian, Count, approximately 1780-1855. P. 233.

Early 1960s : "Ellsworth Kelly, a Retrospective", ed. Diane Waldman, Guggenheim Museum, New York 1997, p. 11
1950 - 1968

Theo Jansen http://streamingmuseum.org/theo-jansen/ at streamingmuseum.org, 2014.

Intellectual Proletarians (1914)

Quote from Dali's 'Introduction' of the exhibition of drawings, made by Lorca, 1930's (MPC 3); as quoted in Dali and Me, Catherine Millet, - translation Trista Selous -, Scheidegger & Spiess AG, 8001 Zurich Switzerland, p. 152
Quotes of Salvador Dali, 1931 - 1940

1912
Source: an 2nd undated letter to Gino Severini (probably July or August 1912, or November); as quoted in Futurism, ed. Didier Ottinger; Centre Pompidou / 5 Continents Editions, Milan, 2008.
The Divine Commodity: Discovering A Faith Beyond Consumer Christianity (2009, Zondervan)
Source: 1970s, Ecodynamics: A New Theory Of Societal Evolution, 1978, p. 266 as cited in: " Ecodynamics and societal evolution http://kairos.laetusinpraesens.org/83deval8_8_h_13" at Kairos @ Laetus-in-Praesens.org. Accessed Feb 25, 2012

“Science fiction offers its writers chances of embarrassment that no other form of fiction does.”
Robot Dreams (1986), introduction
General sources
"Ernest Hemingway" (1977), p. 240
The Good Word & Other Words (1978)

The earliest known attribution of this quote was December 9, 1951, in what appears to be an op-ed piece in The Daily Oklahoman under the byline Elmer T. Peterson, [This is the Hard Core of Freedom, Elmer T. Peterson, Daily Oklahoman, 9 December 1951, 12A]. The quote has not been found in Tytler's work. It has also been attributed to Alexis de Tocqueville.
There are many variants circulating with various permutations of majority, voters, citizens, or public. Ronald Reagan is known to have used this in speeches, as reported in Loren Collins, "The Truth About Tytler http://lorencollins.net/tytler.html":
Other variants:
The American Republic will endure until politicians realize they can bribe the people with their own money.
The American Republic will endure until the day Congress discovers that it can bribe the public with the public's money.
Attributed

1920s, Toleration and Liberalism (1925)
Source: On Human Communication (1957), Syntactic, Semantic, and Pragmatic Information, p. 244-5 Source: See Weaver's section of reference 297. Source: (1951). Lectures on Communication Theory, M.I.T. Press, Cambridge, Mass.
Ref: en.wikiquote.org - Colin Cherry / Quotes / On Human Communication (1957) / Syntactic, Semantic, and Pragmatic Information
Source: 1960s, Beyond Economics: Essays on Society, 1968, p. 142
Introduction
Higher Mathematics for Chemical Students (1911)
Parliamentary speech, 5 August 2003

On the Role of Leadership in the West vs Role of Leadership in Shi'ism (date of speech unknown). https://www.youtube.com/watch?v=0evSkdzXF_4
Speeches: On Religious Government and Islamic Leadership
Source: Nervous Stillness on the Horizon (2006), P. 166 (1966/1972)

Letter to Albert Gallatin (13 December 1803) http://etext.virginia.edu/jefferson/biog/lj34.htm ME 10:437 : The Writings of Thomas Jefferson "Memorial Edition" (20 Vols., 1903-04) edited by Andrew A. Lipscomb and Albert Ellery Bergh, Vol. 10, p. 437
1800s, First Presidential Administration (1801–1805)
Women, Art, and Society: Fourth Edition (2007) ISBN 0-500-20393-8
Source: Talking Science: Language, Learning, and Values. 1990, p. 175

quote, 1917
In the 'Preface' of the exhibition catalogue, Photo Secession Gallery, New York, March 1917

Stanza 15.
Nosce Teipsum (1599)

Speech in Birmingham (30 March 1883), quoted in H. W. Lucy (ed.), Speeches of the Right Hon. Joseph Chamberlain, M.P. (London, George & Routledge & Sons, 1885), p. 41.
1880s
Source: The Romantic Generation (1995), Ch. 6 : Chopin: Virtuosity Transformed

Arp's quote, on the cooperation with his future wife Sophie Taeuber ca. 1916; as quoted in: Abstract Art, Anna Moszynska, Thames and Hudson, London, 1990, p. 65
1910-20s

Quote of Kandinsky, from the catalog of the second exhibition of the 'Neue Künstlervereinigung', München, August, 1910; as cited by de:Wolf-Dieter Dube, in Expressionism; Praeger Publishers, New York, 1973, p. 95
1910 - 1915

“Being busy is a form of laziness - lazy thinking and indiscriminate action.”
The 4-Hour Workweek (2007)

Quote of Calder (1943) in his essay A Propos of Measuring a Mobile, Calder Foundation; as quoted in Calder and Mondrian: An Unlikely Kinship, senior-thesis by Eva Yonas http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.517.581&rep=rep1&type=pdf, Ohio State University August 2006, Department of Art History, p. 19
1930s - 1950s

Source: Number and Time (1974), p. .52

Protectionism: the -ism which teaches that waste makes wealth, 1888, paragraph 155 http://oll.libertyfund.org/titles/sumner-protectionism-the-ism-which-teaches-that-waste-makes-wealth.

Source: The Russian Revolution (1918), Chapter Six, "The Problem of Dictatorship"

Essay on the Principle of Population (1798; rev. through 1826)

Source: Der Fuehrer, Hitler’s Rise to Power (1944), p. 122

Patheos, Orwellian Legislative Duplicity on HB 1485 http://www.patheos.com/blogs/reasonadvocates/2017/05/05/orwellian-legislative-duplicity-hb-1485/ (May 5, 2017)

of Picasso and Georges Braque
In 'Dynanisme plastique' 1914, Boccioni; as quoted in Futurism, ed. Didier Ottinger; Centre Pompidou / 5 Continents Editions, Milan, 2008, p. 134
1914 - 1916

Source: Sociology For The South: Or The Failure Of A Free Society (1854), p. 27-28
Source: Diet for a New America (1987), Ch. 12: All Things Are Connected
The Personality of Jesus (1932)

Source: "The Latest Attack on Metaphysics" (1937), p. 133.

Interview with William Warren Bartley, cited in [Bartley, William Warren, w:William Warren Bartley, Werner Erhard: the Transformation of a Man: the Founding of est, Clarkson N. Potter, Inc., 1978, New York, 121, 0-517-53502-5]
'Search for the Real in the Visual Arts', p. 46
Search for the Real and Other Essays (1948)
Morris, 1938, p. 6
Source: How Maps Work: Representation, Visualization, and Design (1995), p. 235; as cited in: Yuri Engelhardt, "Syntactic structures in graphics." Computational Visualistics and Picture Morphology 5 (2007): 23-35.

La force qui tue est une forme sommaire, grossière de la force. Combien plus variée en ses procédés, combien plus surprenante en ses effets, est l'autre force, celle qui ne tue pas; c'est-à-dire celle qui ne tue pas encore.
in The Simone Weil Reader, p. 155
Simone Weil : An Anthology (1986), The Iliad or The Poem of Force (1940-1941)