Source: On Writing Well (Fifth Edition, orig. pub. 1976), Chapter 1, The Transaction, p. 6.
Quotes about doubt
page 44

The Novel: What It Is (1893)

Source: The Geological Evidences of the Antiquity of Man (1863), Ch.21, p. 421

Dzogchen: The Heart Essence of the Great Perfection, Snow Lion Publications, Ithaca, 2004
Kenneth Noland, p. 23
Conversation with Karen Wilkin' (1986-1988)

Original Philosophy of Hypnotism The International College of Hypnosis & Hypnotherapy
Gerald F. Davis (2013). "Organizational theory," in: Jens Beckert & Milan Zafirovski (eds.) International Encyclopedia of Economic Sociology, p. 484-488
Source: The Face (2003), Chapter 67; Ethan and Hazard's questioning of a pop-psychology university professor
4 Burr. Part IV., 2377.
Dissenting in Millar v Taylor (1769)

Message to the Tricontinental (1967)

[Ed Bradley, Interview with '60 Minutes' on CBS, http://www.gpo.gov/fdsys/pkg/WCPD-1995-05-01/html/WCPD-1995-05-01-Pg689.htm, Weekly Compilation of Presidential Documents Volume 31, Number 17, 689-694, April 23, 1995, United States Government Printing Office]

as quoted in " Students should rebel, challenge status quo to innovate, says Prakash Javadekar http://timesofindia.indiatimes.com/india/Students-should-rebel-challenge-status-quo-to-innovate-says-Prakash-Javadekar/articleshow/53098941.cms", Times of India (07 July 2016)
"… symbols do not carry meaning as trucks carry coal. Their function is to select from alternatives within a given context." (paraphrased by Ernst Gombrich in his Inaugural Lecture at University College London in February 1957, and quoted in memory of Colin Cherry. http://www.gombrich.co.uk/showdoc.php?id=27
Reddy, Michael J. (1979). "The conduit metaphor: A case of frame conflict in our language about language," in: Andrew Ortony ed., Metaphor and Thought, Cambridge University Press. (See: Metalanguage)
The 'transmission' view of communication, as criticized in favor of the 'ritual' view by James Carey (1985) in: Communication as Culture: Essays on Media and Society (Boston: Unwin-Hyman).
Source: On Human Communication (1957), What Is It That We Communicate?, p. 9

The case against remaining in the EU on LabourList.org, 2 June 2016 http://labourlist.org/2016/06/why-should-labour-support-the-european-union-the-case-for-out/

“The question is when is good? The answer is never.”
Cited in: Lawrence Delevingne. " Nobel winner Fama: Active management 'never' good. http://www.cnbc.com/id/102014057" at cnbc.com. 19 Sept. 2014.

Source: The Moral Obligation to be Intelligent (1915), p. 3

Narrator, p. 238
Sharpe (Novel Series), Sharpe's Sword (1983)

Unmasking the False Religion of Evolution (1996)

“Our military machine will crush Iraq in a matter of days and there's no question that it will.”

Vito Acconci interview, in The Art Newspaper, Art Basel edition, December 5, 2012.

“The question must also be raised as to whether we have the actual words of Jesus in any Gospel.”
Source: Rescuing the Bible from Fundamentalism (1991), p. 78
"What is Philosophy?(Part 2)" http://www.xenosystems.net/what-is-philosophy-part-2a/ (2013)

Source: A Man of Law's Tale (1952), In London, p. 59

pg. 144
Main Currents Of Marxism (1978), Three Volume edition, Volume I, The Founders

That's what they'll say, that's what most people think of it: as a wild dog.
Dr. Kent Hovind Q&A - CSE Projects - Atheism/Evolution 9/10/15 Part 2 https://www.youtube.com/watch?v=GfyxsTTRyMA, Youtube (September 10, 2015)
Source: 1980s and later, Thought and Wisdom (1982), p. 19; cited in Werner Ulrich (1998) '" C. West Churchman-75 years". in: Systems practice. December 1988, Volume 1, Issue 4, pp 341-350

President's Radio Address http://georgewbush-whitehouse.archives.gov/news/releases/2008/03/20080308.html, regarding the President's veto of a bill that would have banned waterboarding as an interrogation technique (March 8, 2008)
2000s, 2008

Archetypal Dimensions of the Psyche (1994), The Anima as the Woman within the Man
Source: In the Shadow of Olympus: The Emergence of Macedon (1990), pp. 277-278

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
Churchill’s Finest Hour (2009)

Source: From Anson Chan's speech commenting on her handling the controversial 1986 child custody case on the eve of her retirement on April 27, 2001.

“The only question on which we did not agree has been settled, and the Lord has decided against me.”
To Marsena Patrick, as quoted in "Honoring Lee Anew" http://wluspectator.com/2014/07/15/cox-honoring-lee-anew/ (15 July 2014), by David Cox, A Magazine of Student Thought and Opinion
1860s

Film can be found online, Chico Enterprise-Record, March 23, 2007.
Other

The Century magazine (1892)

Socialism and Religion, published by the Irish Socialist Republican Party (ISRP)

“You always do that. Make all the questions harder.
I make them truer.”
Homecoming saga, Earthborn (1995)

Thomas Jones, Lloyd George (London: Oxford University Press, 1951), p. 178.
About

Letter of resignation to Edward Hornor Coates, Chairman of the Committee on Instruction, Pennsylvania Academy of the Fine Arts (1886-02-15).

Source: The Geological Evidences of the Antiquity of Man (1863), Ch.21, p. 417-418

Save the Children, co-written with Al Cleveland and Renaldo Benson.
Song lyrics, What's Going On (1971)

I don't need that question answered.
Paris Review Interview (1986)

During Prime Minister's Questions, 2 April 2008 http://www.youtube.com/watch?v=-AsiKI7uCog&feature=related, with Deputy Conservative Party Leader, William Hague

Kobos, Andrzej (2009). Po drogach uczonych (in Polish). 4. Kraków: Polska Akademia Umiejętności, pp. 383–398. ISBN 978-83-7676-021-6.
“The rhetorical question, the stock-in-trade weapon ay burds and psychos.”
Tommy, "Relapsing: Scotland Takes Drugs in Psychic Defense" (Chapter 2, Story 1).
Trainspotting (1993)
Ceres, Chapter Eighteen http://www.bigheadpress.com/lneilsmith/?page_id=235, 2009.
Source: An Introduction to Cybernetics (1956), Part 2: Variety, p. 121

N. Gregory Mankiw, "Back In Demand" Wall Street Journal (September 21, 2009).
2000s -

Concerning the National Question and Social Patriotism http://www.marxists.org/archive/tito/1948/11/26.htm Speech held at the Slovene Academy of Arts and Sciences, November 26, 1948, Ljubljana
Speeches

“Television is a great leveler. You always end up sounding like the people who ask the questions.”
"Sex Is Politics" (1979)
1980s, The Second American Revolution (1983)

Elements of Politics (3rd ed., 1908), Ch. 1: Scope and Method of Politics

Eduardo Porter, " Q&A: Thomas Piketty on the Wealth Divide http://economix.blogs.nytimes.com/2014/03/11/qa-thomas-piketty-on-the-wealth-divide/?_php=true&_type=blogs&_r=0," economix.blogs.nytimes.com, March 11, 2014.
In answer of the question: "Your book fits oddly into the canon of contemporary economics. It focuses not on growth and its determinants, but on how the spoils of growth are divided. In that sense, it reminds us of similar concerns in a book of similar title written 150 years ago: Karl Marx’s “Capital.” What parallels would you draw between the two?"
Source: The Quincunx of Time (1973), Chapter 9, “A Comity of Futures” (p. 105)

Conversations with Žižek by Slavoj Žižek and Glyn Daly (Cambridge: Polity Press, 2004), p. 54
Part One, Eight
The Dud Avocado (1958)

Extreme Championship Wrestling. April 17th, 2007.
Extreme Championship Wrestling

In "Willie 'Just Knows' His Job" by Mays, in The Daily Mail (March 25, 1955), p. 16

Source: PTI "Sania for change of attitude towards women in sports"

About his wife Nargis’s past love life. Nargis-Sunil Dutt: A real life romance, 20 October 2003, 6 December 2013, Rediff.com http://www.rediff.com/movies/2003/oct/20dutt.htm,
We all are one, whichever religion we belong to

Source: 1920s, Coming of Age in Samoa (1928), p. 147; Partly cited in: E. Michael Jones (1993) Degenerate Moderns: Modernity As Rationalized Sexual Misbehavior. p. 24-25

Palin: 'I didn't mess up about Paul Revere'
Crooks and Liars
2011-06-05
http://videocafe.crooksandliars.com/david/palin-i-didnt-mess-about-paul-revere
2011-06-05
On April 18, 1775, Paul Revere rode to Lexington, Massachusetts, to warn Samuel Adams and John Hancock that British troops were marching to arrest them. http://www.paulreverehouse.org/ride/real.html
2011
"What is Philosophy? (Part 1)" http://www.xenosystems.net/what-is-philosophy/ (2013) (original emphasis)

as stated in 1796 before the National Institute of Sciences and Arts in Paris, concerning fossil elephants.

As quoted in Phillips' Book of Great Thoughts & Funny Sayings (1993) edited by Bob Phillips, p. 42

p, 125
The Structure of the Universe: An Introduction to Cosmology (1949)

http://seattlepi.nwsource.com/connelly/351364_joel15.html?source=mypi

"Richard Dawkins, the Atheist Evangelist", by Larry Taunton, byFaith (18 December 2007) http://byfaithonline.com/page/in-the-world/richard-dawkins-the-atheist-evangelist
Diederik Aerts (2001) " Time, space and reality : an analysis from physics. http://www.vub.ac.be/CLEA/aerts/publications/2001TimeSpaceReality.pdf"
Robert Edouard Moritz. On Mathematics and Mathematicians https://archive.org/details/onmathematicsmat00mori, 1914, 1942, 1958; p. v; Preface, lead sentence

4 December 1893
New Lamps for Old (1893)

15 February 2006, House of Commons, Prime Minister's Questions when he deputised for David Cameron in his absence. However, Tony Blair was answering questions and was the active leader of the Labour party. Hague was suggesting that Gordon Brown was the "true" power behind the party.