Quotes about ignorance
page 16

Source: Poverty (1912), p. 8

“Intelligence consists in ignoring things that are irrelevant.”
Source: The Bed of Procrustes: Philosophical and Practical Aphorisms (2010), p. 78

Grossman retaliates at his critics.
'Ignorant' remark trails Rex http://www.suntimes.com/sports/240367,CST-SPT-bear02.article

The Hundred Names of God cited in: Margaret A. Boden (2006) Mind As Machine: A History of Cognitive Science. Vol 1. p. 56

Interview with Richard Russo, Failbetter.com, Volume II, Issue III, Summer/Fall 2001, September 24, 2009 http://www.failbetter.com/04/Russo.htm,
Source: The Money Game (1968), Chapter 3, Can Ink Blots Tell You..., p. 40

Speech to the floor of the Senate, Congressional Record, November 9, 1997 http://frwebgate3.access.gpo.gov/cgi-bin/waisgate.cgi?WAISdocID=14015820865+3+0+0&WAISaction=retrieve

Eminent Indians (1947)

Book I : "Concerning Discipline" Chapter 4 "Determination of the Place of Varta and of Dandaniti"
Arthashastra

"Age of Ignorance" New York Review of Books, March 20, 2012 http://www.nybooks.com/daily/2012/03/20/age-of-ignorance/
Source: The Last Lion: Winston Spencer Churchill: Alone 1932-1940 (1988), p. 688-689

Tears came into my eyes that at such a tragic moment, my race still could sing its hope and faith.
Interview in Playboy (January 1965) https://web.archive.org/web/20080706183244/http://www.playboy.com/arts-entertainment/features/mlk/04.html
1960s

"Free speech in Europe" (10 November 2010) http://youtube.com/watch?v=bWw7H4m389o
2010

Individual Liberty (1926), Anarchism and Capital Punishment

http://scienceblogs.com/pharyngula/2008/07/the_great_desecration.php
The Great Desecration
Pharyngula
2008-07-24
Source: The Ideological Origins of the American Revolution (1967), Chapter VI, THE CONTAGION OF LIBERTY, p. 231.

Attributed

How Many People Can Live on Planet Earth? (BBC Horizon, 2009)

Letter to Roger C. Weightman, on the decision for Independence made in 1776, often quoted as if in reference solely to the document the Declaration of Independence (24 June 1826)
1820s

It's the Sun, stupid http://www.norcalblogs.com/watts/2007/04/post_3.html, wattsupwiththat.com, April 6, 2007.
2007

2010s, Democracy Now! interview (2011)

In an interview from Ken Burns' 1994 documentary Baseball
Source: http://www.baseballreliquary.org/flood.htm

February 1985, in William Breit and Roger W. Spencer (ed.) Lives of the laureates
1980s–1990s
As quoted in Sumathi Ramaswamy: The Lost Land of Lemuria: Fabulous Geographies, Catastrophic Histories (University of California Press, 2004) p.3

Press release (28 March 2002), as quoted in "Barr to Continue Fight Against Drug Legalization" http://www.mpp.org/legislation/dc/bills/barr-to-continue-fight-against-drug-legalization.html, MPP.
2000s, 2002
on President Bush's policies regarding Iran and the Middle East
[March 14, 2006, http://www.commondreams.org/news2006/0314-16.htm, Press release: "Greens Urge Steps for Security in Response to Bush Policies on Iran and the Middle East", Common Dreams News Center, 2006-08-17]

Source: Vamps and Tramps (1994), "No Law in the Arena: A Pagan Theory of Sexuality", p. 65

1980s and later, Knowledge, Evolution and Society (1983), "Coping with Ignorance"

Source: Queer: A Novel (1985), Chapter Three

Talk titled "The World After September 11th", AFSC Conference at Tufts University, Massachusetts, December 8, 2001 https://web.archive.org/web/20011230091612/http://www.zmag.org/chomskyafter911.htm.
Quotes 2000s, 2001

“Did ignorance save his freedom, or merely his illusion of freedom?”
Source: There Will Be Time (1972), Chapter 12 (p. 130)

Beast and Man: The Roots of Human Nature (1979). 224.
Source: Just a Theory: Exploring the Nature of Science (2005), Chapter 5, “Pseudoscience: What Some People Do Isn’t Science” (p. 96; quoting Charles Mackay)
Source: The Christian Agnostic (1965), p.225

Referring to an aphorism of Martin Rees. (see Misattributed below)
Source: The Demon-Haunted World : Science as a Candle in the Dark (1995), Ch. 12 : The Fine Art of Baloney Detection, p. 221

Address of the President of Armenia to the people of the Republic of Armenia and to all Armenians http://www.president.am/events/news/eng/?day=10&month=10&year=2009&id=751 (October 10, 2009)
[ Link to tweet https://twitter.com/dril/status/11074098650]
Tweets by year, 2010

We Want to Build a New China
On New Democracy (1940)
Original: (zh-CN) 我们共产党人,多年以来,不但为中国的政治革命和经济革命而奋斗,而且为中国的文化革命而奋斗;一切这些的目的,在于建设一个中华民族的新社会和新国家。在这个新社会和新国家中,不但有新政治、新经济,而且有新文化。这就是说,我们不但要把一个政治上受压迫、经济上受剥削的中国,变为一个政治上自由和经济上繁荣的中国,而且要把一个被旧文化统治因而愚昧落后的中国,变为一个被新文化统治因而文明先进的中国。一句话,我们要建立一个新中国。建立中华民族的新文化,这就是我们在文化领域中的目的。

Arpilei Tohar (1914), p. 2.

2000s, 2005, Address to the Nation on Iraqi Elections (December 2005)

Speech to the Canadian Club in Toronto (6 August 1927), quoted in Our Inheritance (London: Hodder and Stoughton, 1938), p. 78.
1927
Heaven and Earth (2009)

Gopal Bhargava in: Child Labour http://books.google.co.in/books?id=6iYmX2k6G-MC&pg=PA96, Gyan Publishing House, 1 January 2003, P.96

Source: The lever of riches: Technological creativity and economic progress, 1992, p. 171

Nicholas Sparks, Chapter 15, p. 268
2000s, Three Weeks with My Brother (2004)

“Reason, in fact, is a thing of God, inasmuch as there is nothing which God the Maker of all has not provided, disposed, ordained by reason — nothing which He has not willed should be handled and understood by reason. All, therefore, who are ignorant of God, must necessarily be ignorant also of a thing which is His, because no treasure-house at all is accessible to strangers. And thus, voyaging all the universal course of life without the rudder of reason, they know not how to shun the hurricane which is impending over the world.”
Quippe res dei ratio quia deus omnium conditor nihil non ratione providit disposuit ordinavit, nihil [enim] non ratione tractari intellegique voluit. [3] Igitur ignorantes quique deum rem quoque eius ignorent necesse est quia nullius omnino thesaurus extraneis patet. Itaque universam vitae conversationem sine gubernaculo rationis transfretantes inminentem saeculo procellam evitare non norunt.
De Paenitentia (On Repentance), 1.2-3

Lights on Yoga (1935)
"Paul's assembly in Corinth: an alternative society," in Urban Religion in Corinth (Harvard: 2005), pp. 374-375.
Source: Leftism Revisited (1990), pp. 230-231

“For my part I believe in the forgiveness of sin and the redemption of ignorance.”
Response to a heckler asking him to state his beliefs, as quoted in TIME magazine (1 November 1963)
“Never ignore a gut feeling: but never believe that it's enough on its own”
Source: The supermanagers: Managing for Success, the Movers and the Doers, the Reasons Why (1984), p. 87

André Malraux, Préface du Temps du mépris (1935), Malraux citations sur www. fondationandremalraux. org http://fondationandremalraux.org/index.php/citations/

"The Mad Farmer, Flying the Flag of Rough Branch, Secedes from the Union" in Entries (1997).
Poems

“Ignorance and confidence are constant companions.”
Into the Heart of Truth (2001)
Source: Present Status of the Philosophy of Law and of Rights (1926), Ch. VI : Presumptive Rights, § 24, p. 62.

The Death Wish of the Anarcho-Communists (1970) http://www.lewrockwell.com/rothbard/rothbard122.html.

“Lotteries are a tax on ignorance.”
http://www.guardian.co.uk/comment/story/0,,581090,00.html
Attributed

“each ignorant gladness —unteaches what despair preaches”
90
95 poems (1958)

“It is astonishing what you can do when you have a lot of energy, ambition and plenty of ignorance.”
Source: Adventures of a White-Collar Man. 1941, p. 18

Spokespersons of US Right 'In Most Cases Stunningly Ignorant, Interview in Der Spiegel http://www.spiegel.de/international/world/0,1518,733079,00.html (December 6, 2010).

Don Soderquist “ The Wal-Mart Way: The Inside Story of the Success of the World's Largest Company https://books.google.com/books?id=mIxwVLXdyjQC&lpg=PR9&dq=Don%20Soderquist&pg=PR9#v=onepage&q=Don%20Soderquist&f=false, Thomas Nelson, April 2005, p. 113.
On Leading Well

Open letter to the Masters of Dublin (1913)
ibid http://www.themalaymailonline.com/malaysia/article/perkasa-on-allah-arabs-ignorant-westerners-have-vested-interests-and-some-i#sthash.oKV6D9cL.dpuf.

“His best companions, innocence and health;
And his best riches, ignorance of wealth.”
Source: The Deserted Village (1770), Line 61.

Letter to Alexander von Humboldt (6 December 1813)
Scanned letter at The Library of Congress http://memory.loc.gov/cgi-bin/ampage?collId=mtj1&fileName=mtj1page047.db&recNum=74&itemLink=/ammem/mtjhtml/mtjser1.html&linkText=7
Transcript at The Library of Congress http://memory.loc.gov/cgi-bin/query/r?ammem/mtj:@field(DOCID+@lit(tj110127))
1810s

“The ignorant are like useless, brackish soil;
They exist and that is all.”
Verse XLI.6
Tirukkural

cf. Lucas 1981, pp. 225 and 231
Page 95.
"New Classical and Old Austrian Economics", 1991
"Baseball and the Two Faces of Janus", p. 259; originally published as "The Virtues of Nakedness" in The New York Review of Books (1990-10-11)
Triumph and Tragedy in Mudville (2003)
“It is only the ignorant who despise education.”
Maxim 571
Sentences, The Moral Sayings of Publius Syrus, a Roman Slave

1880s, Reminiscences (1881)
Context: Clearness, emphatic clearness, was his highest category of man's thinking power. He delighted always to hear good argument. He would often say, I would like to hear thee argue with him." He said this of Jeffrey and me, with an air of such simple earnestness, not two years ago (1830), and it was his true feeling. I have often pleased him much by arguing with men (as many years ago I was prone to do) in his presence. He rejoiced greatly in my success, at all events in my dexterity and manifested force. Others of us he admired for our "activity," our practical valor and skill, all of us (generally speaking) for our decent demeanor in the world. It is now one of my greatest blessings (for which I would thank Heaven from the heart) that he lived to see me, through various obstructions, attain some look of doing well. He had "educated" me against much advice, I believe, and chiefly, if not solely, from his own noble faith. James Bell, one of our wise men, had told him, "Educate a boy, and he grows up to despise his ignorant parents." My father once told me this, and added, "Thou hast not done so; God be thanked for it." I have reason to think my father was proud of me (not vain, for he never, except when provoked, openly bragged of us); that here too he lived to see the pleasure of the Lord prosper in his hands. Oh, was it not a happiness for me! The fame of all this planet were not henceforth so precious.

(describing Rousseau’s philosophy) p. 55
Kritik der zynischen Vernunft [Critique of Cynical Reason] (1983)

Source: What is Religion, of What does its Essence Consist? (1902), Chapter 11
Source: The Meaning of God in Human Experience (1912), Ch. XVI : The Original Sources of the Knowledge of God, p. 235.
"The Infantile Custom of Compulsory Voting," The Australian (February 21, 1990)

Letter to T.M. Ray, 1839, on English attitudes to Ireland (O’Connell Correspondence, Vol VI, Letter No. 2588).

Re: Is LISP dying? http://groups.google.com/group/comp.lang.misc/msg/63257b85465935eb
Usenet articles, Miscellaneous