Quotes about opinion
page 9

Black, Conrad et al, "A Brief to the Special Senate Committee on the Mass Media from the Sherbrooke Record...", 1969 : Despite Black's involvement in press ownership, he heaped scorn on journalism
“The deadliest contagion is majority opinion.”
Source: Meditations in Wall Street (1940), p. 108
Diary, during the production of Love and Libel (1960).

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

“In the long run an opinion often borrows credit from the forbearance of its patrons.”
"Essays in Criticism by Matthew Arnold," North American Review (July 1865).

Interview with Steve Kroft https://web.archive.org/web/20140611214639/http://www.cbsnews.com/news/clarence-thomas-the-justice-nobody-knows/ (September 2007).
2000s

http://ww.tufts.edu/home/feature/?p=commencement2007&p4=4
Speaking Out

Introduction.
Garden Cities of To-morrow (1898)

To Soviet U.N. Ambassador Valerian A. Zorin in the United Nations Security Council during the Cuban missile crisis (25 October 1962)

Letter to his parents (9 March 1943), from Simon Heffer, Like the Roman. The Life of Enoch Powell (Phoenix, 1999), p. 75.
1940s

Quoted by K. Sathyanarayana in The Power of Humor at the Workplace http://books.google.com/books?id=5ggWAQAAMAAJ&q="I+had+applied+for+a+job+in+1948+and+was+called+for+a+personal+interview.+However+I+failed+to+get+selected+Many+years+later%2C+I+succeeded+in+finding+out+why+I+had+been+rejected+The+remarks+written+by+the+selectors+on+my+application+were+This+woman+is+headstrong+obstinate+and+dangerously+self-opinionated" (2007)
Post-Prime Ministerial

“In the Islamic government all people have complete freedom to have any kind of opinion.”
Foreign policy
Source: Interview with Human Rights Watch, Paris (10 November 1978)

Speech http://hansard.millbanksystems.com/commons/1867/aug/02/motion-for-an-address in the House of Commons (2 August 1867) on the Orissa famine of 1866
1860s

Source: Ziezi ex quo Vulgares, "Забравеният д-р Ганчо Ценов" http://ziezi.net/cenov.html

“Opinion is ultimately determined by the feelings, and not by the intellect.”
Pt. IV, Ch. 30 : General Considerations
Social Statics (1851)
Source: Engineering Education and Engineering Practice in the Year 2000 (1967), p. 137

What more valuable for the elevation of our own character?
Timoleon
Parallel Lives

Vol. 3, pg 163, Translated by W.P. Dickson.
The History of Rome - Volume 3
Mohammad Mujeeb, The Indian Muslims (London, 1967), pp.67-68. quoted from Lal, K. S. (1990). Indian muslims: Who are they.

When asked about intention for a magazine in Berlin (http://www.pulse-berlin.com/)
Source: Freedom, Loyalty, Dissent (1954), p. 15
All for Australia (1984)
'Philip Larkin: 'Wolves of Memory'
Essays and reviews, At the Pillars of Hercules (1979)

"1896", p. 20
A Writer's Notebook (1946)
Quitting the paint factory: On the virtues of idleness

From Country Life in Georgia in the Days of My Youth Felton, p. 86 http://www.google.com/books?id=gHsLIvQ_BN0C&dq=rebecca+latimer+felton&printsec=frontcover&source=in#PPA86,M1.

Letter to Legendre (July 2, 1830) in response to Fourier's report to the Paris Academy Science that mathematics should be applied to the natural sciences, as quoted in Science (March 10, 1911) Vol. 33 https://books.google.com/books?id=4LU7AQAAMAAJ&pg=PA359, p.359, with additional citations and dates from H. Pieper, "Carl Gustav Jacob Jacobi," Mathematics in Berlin (2012) p.46

1990s, I Am a Man, a Black Man, an American (1998)

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

"Propaganda by Redefinition of Words" (5 October 1971).
Scientology Policy Letters

Therefore these words were a thorn in their eyes and a scourge on their backs.
Socratic Memorabilia, J. Flaherty, trans. (Baltimore: 1967), pp. 165-167.
"Hayek and Mill", History of Political Economy (2008)

Speech to the Economic Students' Union at the School of Economics and Political Science, London (14 December 1900), quoted in The Times (17 December 1900), p. 13.
1900s

Persecution and Tolerance, Hulsean Lectures, University of Cambridge (Winter 1893–94)

Source: The Sociology of Knowledge, (1937), p. 503

Anonymous 13th century Provençal biographer of Guiraut de Bornelh, cited from H. J. Chaytor The Troubadours of Dante (1902) pp. 29-30; translation from The Catholic Encyclopedia (1909) vol. 6. http://www.newadvent.org/cathen/06570b.htm
Criticism

Source: 1880s, Incidents and Anecdotes of the Civil War (1885), pp. 214

Source: How to Pay for the War (1940), Ch. 1 : The Character of the Problem
David A. Ridenour, "Senators Try to Stifle the Global Warming Debate," Chicago Sun Times, November 16, 2006

2010s, 2015, Speech on extremism (20 July 2015)

Diary entry (4 August 1914), quoted in John Keiger, 'France' in Keith Wilson (ed.), Decisions for War 1914 (London: University College London Press, 1995), pp. 141-142.

1840s, Heroes and Hero-Worship (1840), The Hero as Poet

Speech in the House of Commons on the Irish insurgency after the Great War, quoted in Lord Birkenhead, Halifax (Hamish Hamilton, 1965), pp. 121-122
Backbench MP

the postponement of the Soviet Congress from three-month periods to six-month periods!
Chapter Six, "The Problem of Dictatorship"
The Russian Revolution (1918)

Source: Thought Without a Body? (1994), pp. 286-289

Letter to Marin Mersenne (end of Feb., 1634) as quoted by Amir Aczel, Pendulum: Leon Foucault and the Triumph of Science (2003)
Genesis and Growth of Nehruism (1993)

1780s, Letter to R. Lushington (1786)
Source: Life, the Truth, and Being Free (2010), p. 119
Context: How would your life be different if… You stopped allowing other people to dilute or poison your day with their words or opinions? Let today be the day … You stand strong in the truth of your beauty and journey through your day without attachment to the validation of others.

Scotland Live (2005-10-31): On the 2003 invasion of Iraq
2000s, 2005

Footnote<!--3, p.185-->: The Epinomis, from which Nicomachus here quotes 991 D ff., is now recognized as not genuinely Platonic. Nicomachus doubtless cited the passage from memory, for he does not give it exactly...
Nicomachus of Gerasa: Introduction to Arithmetic (1926)

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

All the Way to Heaven :The Selected Letters of Dorothy Day (2010), p. 81

Charlotte Brontë, on Modern Painters, Vol. 1 (1843), by John Ruskin. Letter to W. S. Williams (31 July 1848) The Letters of Charlotte Brontë

At NYU Law School, (18 October 1990); after retirement from the Court, reflecting on his vote in Bowers v. Hardwick to uphold laws making homosexual sex a crime for which people could be imprisoned. Reported in Nat Hentoff, " Infamous Sodomy Law Struck Down http://www.villagevoice.com/news/9850,213790,2210,6.html", The Village Voice, 22 December 1998.
1990s

Zubdat-ul-Tawarikh quoted in Goel, Sita Ram (2001). The story of Islamic imperialism in India. Chapter 7 ISBN 9788185990231

letter http://digicoll.library.wisc.edu/cgi-bin/AldoLeopold/AldoLeopold-idx?type=turn&id=AldoLeopold.ALCorresAK&entity=AldoLeopold.ALCorresAK.p0597&isize=XL to Wallace Grange, 3 January 1948.
1940s

Quoted, The Beautiful and Damned (1922)

Defence of Criminals: A Criticism of Morality (1889)

Letter to George Washington (November 1779)
The Impartial Spectator: Adam Smith's Moral Philosophy (2007), Ch. 1: Two Versions

“Some modern cases have in my opinion gone too far.”
Walford v. Duchess de Pienne (1797), 2 Esp. 555.

“A man must know how to fly in the face of opinion; a woman to submit to it.”
Un homme doit savoir braver l'opinion; une femme s'y soumettre.
Delphine (1802), epigraph
The epigraph is taken from the writings of de Staël's mother, Suzanne Necker.

1910-14
India's Rebirth

Alfred de Zayas Statement by on his personal website http://alfreddezayas.com.
2013

1860s, The Constitution of the United States: Is It Pro-Slavery or Anti-Slavery? (1860)

'A Tract for the Tories', The Spectator (1967), quoted in The View from No. 11: Memoirs of a Tory Radical (London: Bantam, 1992), p. 8.

“All those in the Arab world who deny the Jewish holocaust are in my opinion Zionists.”
Ibid.
On Anti-Semitism
Breaking Down the Wall of Silence (Abbruch der Schweigemauer) (1990)

“That is why we give to children a proverb, or that which the Greeks call Chreia, to be learned by heart; that sort of thing can be comprehended by the young mind, which cannot as yet hold more. For a man, however, whose progress is definite, to chase after choice extracts and to prop his weakness by the best known and the briefest sayings and to depend upon his memory, is disgraceful; it is time for him to lean on himself. He should make such maxims and not memorize them. For it is disgraceful even for an old man, or one who has sighted old age, to have a note-book knowledge. "This is what Zeno said." But what have you yourself said? "This is the opinion of Cleanthes." But what is your own opinion? How long shall you march under another man's orders? Take command, and utter some word which posterity will remember. Put forth something from your own stock.”
Ideo pueris et sententias ediscendas damus et has quas Graeci chrias vocant, quia complecti illas puerilis animus potest, qui plus adhuc non capit. Certi profectus viro captare flosculos turpe est et fulcire se notissimis ac paucissimis vocibus et memoria stare: sibi iam innitatur. Dicat ista, non teneat; turpe est enim seni aut prospicienti senectutem ex commentario sapere. 'Hoc Zenon dixit': tu quid? 'Hoc Cleanthes': tu quid? Quousque sub alio moveris? impera et dic quod memoriae tradatur, aliquid et de tuo profer.
Epistulae Morales ad Lucilium (Moral Letters to Lucilius), Letter XXXIII

Simon Newcomb, Henry Burchard Fine, Florian Cajori et al. Report of the Committee [of Ten http://books.google.com/books?id=58agAAAAMAAJ on Secondary School Studies Appointed at the Meeting of the National Educational Association July 9, 1892: With the Reports of the Conferences Arranged by this Committee and Held December 28-30, 1892]. p. 108

Source: Confessions of a Young Man http://www.gutenberg.org/files/12278/12278-h/12278-h.htm (1886), Ch. 9.

IRNA (April 24, 2001)
2001

Speech on the American Civil War, Town Hall, Newcastle upon Tyne (7 October 1862), quoted in The Times (9 October 1862), pp. 7-8.
1860s
Press conference http://www.espnfc.com/team/united-states/660/blog/post/2657429/jurgen-klinsmann-under-scrutiny-after-bad-day-for-us (10 October 2015)
2010s, 2015
Letter to his brother Jeff, from Hawaii (7 April 1941); p. 11
To Reach Eternity (1989)

Source: Aphorisms and Reflections (1901), p. 180

Kate Upton on Instagram https://www.instagram.com/p/BKO8_ZGA87r/?taken-by=kateupton&hl=en (September 11, 2016)
Source: They'd Rather Be Right (1954), p. 92.

Letter to George Washington (24 April 1779)