Quotes about opinion
page 7

In a letter to Andrew Crosse, as quoted in Eugen Kölbing's Englische Studien, Volume 19 https://archive.org/stream/englischestudien19leipuoft#page/158/mode/1up (1894), Leipzig; O.R. Reisland, "Byron's Daughter", p. 158.
Tumblr postings
Source: The Frontiers of Meaning: Three Informal Lectures on Music (1994), Ch. 2 : How to Become Immortal

Source: undated quotes, Tàpies, Werke auf Papier 1943 – 2003,' (2004), p. 30.

Presidential campaign (April 12, 2015 – 2016), Democratic Presidential Debate in Miami (March 9, 2016)

My Reviewers Reviewed (lecture from June 27, 1877, San Francisco, CA)

Winston Churchill, The Second World War. Volume One: The Gathering Storm (London: The Reprint Society, 1950), pp. 28-29.
About
The Integrity of the Intellect (July 1920)

Speech to the Bewdley Unionist Association in Worcester (10 April 1937), quoted in Service of Our Lives (1937), pp. 102-104.
1937

Crisis of the House Divided: An Interpretation of the Issues in the Lincoln Douglas Debates http://archive.li/CFqbg (1959), p. xi
1950s

(original Dutch, citaat van B.C. Koekkoek:) Het doel van den schilder is, naar mijn wijze van zien, in zoverre met dat des dichters gelijk, dat beiden op het gevoel van den beschouwer of den lezer willen werken. Dit kunnen zij onmogelijk doen, zodra hunne taferelen.. ..den stempel der natuur, de waarheid missen.. .De Nederlandschee schilder gevoelt even goed als de Duitsche den invloed der verhevenen natuur, maar de Nederlander wil eerst met het 'eenvoudige ware' bekend zijn, om hetzelve later met dichterlijke te vereenigen..
Source: Herinneringen aan en Mededeelingen van…' (1841), p. 29-30

Dissent, Gilbert v. Minnesota, 254 U.S. 325, 338 (1920).
Judicial opinions

Report of the First Meeting of the British Association for the Advancement of Science held at York in September 1831. By James F. W. Johnston, A. M. &c. &c. As found in David Brewster's The Edinburgh Journal Of Science. Vol. 8 https://archive.org/stream/edinburghjourna09brewgoog#page/n29/mode/2up, p. 29.
Source: The Wizard of Zao (1978), Chapter 5 (pp. 61-62)

Letter to von Kahr (2 November 1923), quoted in F. L. Carsten, The Reichswehr and Politics 1918 to 1933 (Oxford: Clarendon Press, 1966), p. 117.

As quoted in "Sports Parade"
Other, <big><big>1970s</big></big>, <big>1971</big>

Speech http://hansard.millbanksystems.com/commons/1846/jun/25/protection-of-life-ireland-bill in the House of Commons (25 June 1846).
1840s

Treaty of Tripoli, Article 11 http://avalon.law.yale.edu/18th_century/bar1796t.asp#art11, signed at Tripoli on November 4, 1796, and at Algiers on January 3, 1797 and received ratification unanimously from the U.S. Senate on June 7, 1797; it was signed into law by John Adams (the original language is by Joel Barlow, U.S. Consul). This is a declaration of the secular character of the government of the United States, sometimes misattributed to John Adams, who signed the treaty into law. A portion is also sometimes misattributed to George Washington, and also misquoted as "This nation of ours was not founded on Christian principles."
Treaty of Tripoli (1797)

Original text: [...] si l'on y rencontre moins d'éclat qu'au sein d'une aristocratie, on y trouvera moins de misères; les jouissances y seront moins extrêmes, et le bien-être plus général; les sciences moins grandes, et l'ignorance plus rare; les sentiments moins énergiques, et les habitudes plus douces; on y remarquera plus de vices et moins de crimes.
Introduction.
Democracy in America, Volume I (1835)

Arthur Jensen, "The Debunking of Scientific Fossils and Straw Persons" http://www.mugu.com/cgi-bin/Upstream/jensen-gould-fossils Contemporary Education Review 1:2, 1982

"The Characteristics of Propaganda" in Readings in Propaganda and Persuasion : New and Classic Essays (2006) edited by Garth S. Jowett and Victoria O'Donnell, p. 48, note 47

Articles, 10 Things to Celebrate: Why I'm an Anti-Anti-American (June 2003)

Diary (14 February 1879)
Diary and Letters of Rutherford Birchard Hayes (1922 - 1926)

The Great Wall of China.
Song lyrics, River of Dreams (1993)

The Review and Herald (15 April 1880); also in Mind, Character, and Personality (1977), Vol. 2, p. 789

2011-01-04
O'Reilly Debates Atheist Group President Over Religions Are 'Scams' Billboard
The O'Reilly Factor
Fox News
Television
http://www.foxnews.com/on-air/oreilly/transcript/o039reilly-debates-atheist-group-president-over-religions-are-039scams039-billboard
Bill O'Reilly Proves God's Existence - Neil deGrasse Tyson
2011-01-06
The Colbert Report
Comedy Central
Television
http://www.colbertnation.com/the-colbert-report-videos/370183/january-06-2011/bill-o-reilly-proves-god-s-existence---neil-degrasse-tyson
interviewing David Silverman of American Atheists regarding the organization's Huntsville, Alabama "You Know They're All Scams" billboard

Quote of Richter on his 'Grey Paintings', in a letter to nl:Edy de Wilde, 23 February 1975; as cited on collected quotes on the website of Gerhard Richter: on 'Grey-paintings' https://www.gerhard-richter.com/en/quotes/subjects-2/grey-paintings-9
1970's
Variant: It [grey color] makes no statement whatever... It has the capacity that no other color has, to make 'nothing' visible. To me grey is the welcome and only possible equivalent for indifference, non-commitment, absence of opinion, absence of shape (note 99).... but, grey like formlessness and the rest, can be real only as an idea.... The painting is then a mixture of grey as a fiction and grey as a visible, designated area of color.

"Name the poison" (22 June 2011) http://youtube.com/watch?v=sEsWO4xep44
2011

Part 5: "The World of One Physicist", "The 7 Percent Solution", p. 255
Surely You're Joking, Mr. Feynman! (1985)
Source: How to Become President (1940), Ch. 5 : Issues and how to pick them

The Liberty of Man, Woman and Child (1877)

Source: A Man of Law's Tale (1952), At the Scottish bar, p. 26

Speech to the Oxford Carlton Club (3 March 1922), quoted in Maurice Cowling, The Impact of Labour, 1920-1924: The Beginnings of Modern British Politics (Cambridge: Cambridge University Press, 1971), p. 147.
1920s
Source: 1940s, I is Style (2000), p. 47 : in a letter to Käthe Steinitz (24 June 1945)
Justice Young leaving Michigan Supreme Court for Detroit law firm job http://www.freep.com/story/news/local/michigan/2017/03/29/justice-young-leaving-michigan-supreme-court-detroit-law-firm-job/99772568/ (March 29, 2017)

2000-09, Ai Weiwei, Nursing Head Wound, Sharpens Criticism, 2009

Love Over Scotland, chapter 68.
The 44 Scotland Street series

Broadcast from London (6 March 1934); published in This Torch of Freedom (1935), p. 17.
1934

Mont Saint Michel and Chartres (1904)

Source: Never Again: Securing America and Restoring Justice (2006), p. 112

Huxley v. West London Extension Railway Co. (1886), L. R. 17 Q. B. D. 383.

Meteorological Observations and Essays: Mit Tabellen, 1834 p. 18

Source: Are We Victims of Propaganda, Our Invisible Masters: A Debate with Edward Bernays (1929), p. 145

James Burgh, in The Dignity of Human Nature, Or, A Brief Account of the Certain and Established Means for Attaining the True End of Our Existence (1754); this is very widely misattributed to Mann, appearing at least as early as the publication of Thoughts Selected from the Writings of Horace Mann (1867) edited by Mary Mann.
Misattributed

Dissenting, Obergefell v. Hodges, 135 S. Ct. 2584, 192 L. Ed. 2d 609 (2015) ; decided June 26, 2015.
2010s
In a letter of resignation http://web.archive.org/web/20180726214951/https://www.facebook.com/haim.watzman/posts/10160660063290022?notif_id=1532534669809157¬if_t=feedback_reaction_generic from The Jerusalem Report, on the dismissal of Avi Katz.

Troy Aikman — reported in Ed Werder (August 19, 1993) "Aikman: Smith should be top-paid runner", The Dallas Morning News, p. 8B.
About

“It's almost as if our society values opinion more than it values knowledge.”
Japan's Nuclear Disaster Explained http://www.youtube.com/watch?v=rBvUtY0PfB8
Youtube

As quoted in Carl Friedrich Gauss: Titan of Science (1955) by Guy Waldo Dunnington. p. 362

Webpage Astronauta Marcos Pontes - Entrevistas http://marcospontes.com.br/$SETOR/MCP/OPINIOES/entrevistas.html

Jeremy Marsh, Chapter 14, p. 218
2000s, True Believer (2005)

Letter to A.S. Suvorin (December 17, 1890)
Letters

Address at Suffolk University Law School; quoted in The New York Times (17 April 1986).
Books, articles, and speeches

Source: The Meaning of Culture (1929), p. 19

Source: The Conflict of the Individual and the Mass in the Modern World (1932), pp. 29-30

1910s, Dada Manifesto', 1918

L'Ami du peuple, vol. 7, p. 3965

Atkins v. Virginia (2002) (dissenting).
2000s

John Selby Watson, The Life of Richard Porson, M.A. (1861), p. 385.
Authority and persuasion in philosophy (1985)

Philips v. Bury (1694), 2 T. R. 358.

translation from the original Dutch: Fons Heijnsbroek
version in original Dutch (citaat van Jozef Israëls' brief, in het Nederlands): .Ik wou echter als vriend van u nl:Johannes Bosboom een raad hebben dit namelijk of gij oordeelt dat ik mijne schilderij 'Ouden en Jongen' naar Brussel [tentoonstelling] zal zenden of niet. Ik dacht dat het een aardig schilderij was, maar nu las ik in het Handelsblad dat het zo slecht is. Wat is daarvan aan. Doe mij svp het genoegen mij hierop een woordje sans facon [zonder omwegen] te dienen, hoe gij het voor u zelf vindt.
Quote from his letter to J. Bosboom, from Bloemendaal, 27 June 1866 (HGA, input no. OV2, schildersbrieven (painter-letters)
Quotes of Jozef Israels, 1840 - 1870

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

Letter to George and Georgiana Keats (March 19, 1819)
Letters (1817–1820)

Interview with Le Nouvel Observateur, Paris (15-21 January 1998). (Brzezinski has repeatedly http://etd.lsu.edu/docs/available/etd-04252012-175722/unrestricted/WHITE_THESIS.pdf denied https://www.youtube.com/watch?v=RGjAsQJh7OM having said this, and no such memo exists. https://books.google.com/books?id=ToYxFL5wmBIC&q=deep+skepticism#v=snippet&q=deep%20skepticism&f=false)
Disputed

DNRC Newsletter #57, 2004-10-28 http://www.dilbert.com/comics/dilbert/dnrc/html/newsletter57.html,

Page 105
2000s, (2008)

“What Pragmatism Means,” Pragmatism, pp. 60–61 (1931); lectures delivered at the Lowell Institute, Boston, Massachusetts (December 1906) and at Columbia University, New York City, (January 1907)
1900s

Biography of an Idea: Memoirs of Public Relations Counsel (1965)

Source: New Options for America (1991), Chapter 19, "Twenty-eight Ways of Looking at Terrorism," pp. 167–68.
Homage to the square' (1964), Oral history interview with Josef Albers' (1968)

President urges talks with Beijing: report, Focus Taiwan, 1, October 5, 2016, 6 October 2016 http://focustaiwan.tw/news/aipl/201610050021.aspx,

"New Pastor in Initial Sermon," The Register and Leader (Des Moines), January 16, 1911, p. 5

"The Business of a Novelist," review of William Rollins's The Shadow Before, 1934