Quotes about ignorance
page 20

TV Interview for Granada World in Action (27 January 1978) http://www.margaretthatcher.org/speeches/displaydocument.asp?docid=103485
Leader of the Opposition

As quoted in "Why Now Is a Divine Time for Alicia Witt", by Sarah Beauchamp at Huffington Post (30 May 2014)

"From a house on the Borderland", Horrorstruck (1987), Reprinted in Gene Wolfe, Castle of Days (1992)
Nonfiction

On William Makepeace Thackeray Ch. II: The Great Victorian Novelists (p. 65)
The Victorian Age in Literature (1913)

Quoted in an interview http://www.haroldpinter.org/politics/politics_america.shtml, conducted by Andrew Graham-Yooll, South Magazine (May 1988)

“The man who realizes his ignorance has taken the first step toward knowledge.”
The Rosicrucian Cosmo-Conception (1909) Introduction

Part Eight “The Return”, Chapter iii “The Horse Unharnessed”, Section 2 (p. 344)
(1987), BOOK TWO: THE FUGUE

Journal of Discourses, 13:271 (July 24, 1870)
1870s

An Old Man's Thoughts on Many Things, Of Education I

1992 The Redfern Speech, launching International Year of Indigenous Peoples

Letter to the Editor, New York Times, December 21, 2006, 2010-12-07 http://www.haydenplanetarium.org/tyson/read/2006/12/21/a-teacher-a-student-and-a-church-state-dispute,
2000s

Frederick Soddy's speech at the Nobel Banquet in Stockholm (10 December 1922) http://nobelprize.org/nobel_prizes/chemistry/laureates/1921/soddy-speech.html

“The sleep of a wise man is far better than the worship of an ignorant one during the night.”
Ibn Shu’ba al-Harrani, Tuhaf al-'Uqul, p. 419.
Regarding Knowledge & Wisdom, Religious

Brooks D. Simpson, "The Future of Stone Mountain" https://cwcrossroads.wordpress.com/2015/07/22/the-future-of-stone-mountain/ (22 July 2015), Crossroads, WordPress

Letter to Thomas Jefferson (23 August 1787), The Works of John Adams.
1780s

About her contributions to India.
Q&A with Wendy Doniger, the Mircea Eliade Distinguished Service Professor and author of The Hindus

[Wright, Lawrence, February 14, 2011, The Apostate, Paul Haggis vs. the Church of Scientology, The New Yorker, http://www.newyorker.com/reporting/2011/02/14/110214fa_fact_wright?currentPage=all]

This week in Global Warming http://wattsupwiththat.com/2007/03/24/this-week-in-global-warming/, wattsupwiththat.com, March 24, 2007.
2007

Source: Time Scout (1995), Chapter 14 (p. 286)

Journal of Discourses, 4:219 (February. 8, 1857)
Brigham Young describes the doctrine of Blood Atonement
1850s
Methods of Mathematics Applied to Calculus, Probability, and Statistics (1985)

As quoted in Woodrow Wilson and the Roots of Modern Liberalism, Ronald J. Pestritto, Rowman & Littlefield Publishers, Inc., 2005, p. 45. Came from Wilson’s marginal notes on one of his manuscripts.
1920s and later
Setting the recored straight, Sunday, 7.11.1993, quoted in Elst, Koenraad (2001). Decolonizing the Hindu mind: Ideological development of Hindu revivalism. New Delhi: Rupa. p. 57

Introduction, p. 4
A Plea for the Animals (2014)

Source: The Philosopher's Apprentice (2008), Chapter 17 (p. 400)

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

As quoted in CBS News http://www.cbsnews.com/news/donald-trump-henry-paulson-op-ed-hillary-clinton-election-2016/ (June 2016)
Choose country over party (2016)

Source: Auguste Rodin: The Man, His Ideas, His Works, 1905, p. 61-63

Source: Between Caesar and Jesus (1899), p. 26

"O'Reilly Open Source Conference: Day 3" by Paul Weinstein, in Apache Week (26 July 2002) http://www.apacheweek.com/features/oscon2002
2000s

On Truth (1948), Pt 2, Ch. 3, II, B, 3, b)

Interview on NBC News' Meet The Press (July 31, 2016)
" Sexist Words, Speciesist Roots https://books.google.it/books?id=iJSuTkFlpyIC&pg=PA11", in Animals and Women: Feminist Theoretical Explorations, edited by Carol J. Adams and Josephine Donovan (Durham, NC: Duke University Press, 1995), p. 19.

The History of Freedom in Antiquity (1877)

Source: The Plot: The Secret Story of the Protocols of the Elders of Zion (10/2/2005), p.74
About Hamid Dalwai at a seminar. Goel, S. R. (1994). Defence of Hindu society.
About

Session 829, Page 140-141
The Individual and the Nature of Mass Events, (1981)
Source: Facets of a Diamond: Reflections of a Healer (2002), p. 15

"To the Indianapolis Clergy." The Iconoclast (Indianapolis, IN) (1883)

The Fortnightly Review, vol. 25 (1876) p. 859

Speaking at the House of Representatives on the Texas Low-Level Radioactive Waste Disposal Compact, in 7 October 1997. https://www.congress.gov/congressional-record/1997/10/7/house-section/article/h8512-1?q=%7B%22search%22%3A%5B%22%5C%22all+that+Texas+and+Maine+and+Vermont+are+asking+for+today%5C%22%22%5D%7D&r=1
1990s

"Hindu Nationalists of Modern India" by Jose Kuruvachira, p. 20
Source: Theory and Practice of Muslim State in India (1999), Chapter 7

Source: The Human Problems of an Industrial Civilisation, (1933), p. 1, Chapter 1: Fatigue

pg. 510
Main Currents Of Marxism (1978), Three Volume edition, Volume II, The Golden Age
Interview while promoting Capitalism : A Love Story (March 2010) http://www.youtube.com/watch?v=cx2tJg91hsU
2010

Source: Milennial Dawn, Vol. III: Thy Kingdom Come (1891), p. 49.

Neil DeGrasse Tyson Debunks 2012 Armageddon http://www.tompainesghost.com/2010/06/neil-degrasse-tyson-debunks-2012.html<!-- starting ~1m50s --> after the James Webb telescope panel discussion in Battery Park at the World Science Festival, June 4th, 2010
2010s
The Natural West: Environmental History in the Great Plains and Rocky Mountains (2003)
Reb Saunders to Reuven Malter when talking about when Daniel was younger (p. 286)
The Chosen (1967)

“I am enormously wise and abysmally ignorant.”
My Heart's in the Highlands (1939)

First State of the Union Address (1889)

PJTV: How Breitbart Conquered ACORN (and the MSM) https://www.youtube.com/watch?v=tKgjCDe0BSc (27 September 2009)
2000s

George Boole, "Right Use of Leisure," cited in: James Hogg Titan Hogg's weekly instructor, (1847) p. 250; Also cited in: R. H. Hutton, " Professor Boole http://books.google.com/books?id=pfMEAAAAQAAJ&pg=PA153," (1866), p. 153
1840s

Pedagogia do oprimido (Pedagogy of the Oppressed) (1968, English trans. 1970)

The Fine Old English Gentleman (1841)

p, 125
Geometrical Lectures (1735)

C. S. Lewis, letter to Arthur Greeves dated October 1, 1934, cited from W. H. Lewis (ed.) The Collected Letters of C. S. Lewis (San Francisco: HarperSanFrancisco, 2004) vol. 2, p. 143
Criticism

1990s, Ayodhya and After: Issues Before Hindu Society (1991)

“To ask may be but a moment's shame, not to ask and remain ignorant is a lifelong shame.”
This is quoted in several published books as a Japanese proverb, without any mention of Jigoro Kano as author.
Misattributed
Further Studies in a Dying Culture (1949), Chapter IV: Consciousness: A Study in Bourgeois Psychology
Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 111.

Hunger of Memory: The Education of Richard Rodriguez (1982)

“There is no terror equal that of the ignorant in a strange place.”
Source: 1960s, Julian (1964), Chapter 16

Quoted in "Blood and Soil: A World History of Genocide and Extermination" - Page 405 - by Ben Kiernan - Social Science - 2007

Source: The systems view of the world (1996), p. 139 as cited in: Sherryl Stalinski (2005, p. 17).
Ch 20
A Canticle for Leibowitz (1959), Fiat Lux

“Trying to ignore secondarily meaningful things gives them more meaning than they deserve.”
30 January 2010 https://twitter.com/gtdguy/status/8421130524
Official Twitter profile (@gtdguy) https://twitter.com/gtdguy

Interview included in the documentary Bukowski: Born Into This. Discussing the movie adaptation of Barfly and his novel Hollywood.
Interviews