Quotes about concept
page 18

Source: The Characteristics of the Present Age (1806), p. 20

"Subjective and Objective," in Mortal Questions, Cambridge University Press, 1979, p. 196.
Source: "The bases of social power." 1959, p. 150

Ragnar Frisch. " A complete scheme for computing all direct and cross demand elasticities in a model with many sectors http://econ.ucdenver.edu/beckman/Research/readings/frisch-demand-econometrica.pdf." Econometrica 27.2 (1959), p. 178; Cited in: Chipman, John S. " http://www.sv.uio.no/econ/om/tall-og-fakta/nobelprisvinnere/ragnar-frisch/Chipman%20paper[1.pdf The contributions of Ragnar Frisch to economics and econometrics]." ECONOMETRIC SOCIETY MONOGRAPHS 31 (1998): 58-110.
1940-60s

"Le concept de l'absolu, d'où découlent, dans le domaine moral, les lois ou normes morales, constitue, le principe d'identité, qui est la loi fondamentale de la pensée; il en découle les normes logiques qui régissent la pensée dans le domaine de la science."
Source: Words of a Sage : Selected thoughts of African Spir (1937), p. 59 [Hélène Claparède-Spir had underlined - the translator]
Source: Creative Problem Solving (1991), p. 2.

Letter to the Cabinet (January 1942), quoted in Paul Addison, The Road to 1945 (London: Pimlico, 1994), pp. 202-203
1940s

Source: Neo-statecraft and Meta-geopolitics (2009), p.13
Literature in a Country Without a Mythology (1988).
See Gombrich in reference 348
On Human Communication (1957), Language: Science and Aesthetics

2006, Faith, Reason and the University — Memories and Reflections (2006)
Source: Ideas have Consequences (1948), p. 49.

Olga Rozanova, in 'Osnovy Novogo Tvorchestva i printsipy ego neponimaniia,' Soiuz molodezhi 3 (March 1913), p. 18; as quoted by Svetlana Dzhafarova, in The great Utopia - The Russian and Soviet Avant-Garde, 1915-1932 (transl. Jane Bobko); Guggenheim Museum, New York, 1992, p. 477
Olga Rozanova accused the critics and their brethren of bad faith, citing as a prime example Aleksandr Benua's "Kubizm ili Kukishizm" ("Cubism or Je-m'en-foutisme"), a scathing 1912 review
Incognito: The Secret Lives of The Brain

From Evelyn Underhill, http://www.sacred-texts.com/chr/asm/index.htm Adornment of the Spiritual Marriage
The Spiritual Espousals (c. 1340)
“All the evil in the world, and all the unhappiness, comes from the I-concept.”
Ask the Awakened: the Negative Way (1963)

Quote of Calder (1943) in his essay A Propos of Measuring a Mobile, Calder Foundation; as quoted in Calder and Mondrian: An Unlikely Kinship, senior-thesis by Eva Yonas http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.517.581&rep=rep1&type=pdf, Ohio State University August 2006, Department of Art History, p. 19
1930s - 1950s
Dagens Nyheter http://www.dn.se/kultur-noje/an-exclusive-interview-with-j-m-coetzee interview with David Attwell (December 8, 2003)

Preface to the First Edition.
The Myth of Mental Illness: Foundations of a Theory of Personal Conduct (1961)
Source: Fifty years of information progress (1994), p. 7: Introduction.

Source: Rules for Radicals: A Practical Primer for Realistic Radicals (1971), p. 24–25

As quoted in Profile of Sir Alfred Ayer (June 1971) by Euro-Television, quoted in A.J. Ayer: A Life (1999), p. 2.

In Quest of Democracy (1991)

As quoted in Fundamentals of Teaching Mathematics at University Level (2000) by Benjamin Baumslag, p. 214
Source: Constructing the subject: Historical origins of psychological research. 1994, p. vii; Preface.
Introduction, The Nature of Probability Theory, p. 3.
An Introduction To Probability Theory And Its Applications (Third Edition)

Introduction to Logic: and to the Methodology of Deductive Sciences. (1941/2013) Tr. Olaf Helmer, pp. 108-110.

Ackoff (1959), "Games, Decisions and Organizations," General Systems, 4 (1959), p. 145-150; cited in: Ludwig von Bertalanffy (1968) General System Theory. p. 9.
1950s
Source: Information and Decision Processes (1960), p. vii
Source: Hyperion (1989), Chapter 4 (p. 292)
Morgen Witzel (2003), Fifty Key Figures in Management. p. 42
Source: Exploratory cartographic visualization: advancing the agenda (1997), p. 1

Discussing Morning View on Boogie TV interview was done the day of their concert at Vega, Copenhagen
Meta Maths!: The Quest for Omega https://books.google.com/books?id=ZACLDQAAQBAJ&pg=PA11. Vintage Books (2006). p. 11
“The concept of "variety" [is] inseparable from that of "information."”
Source: An Introduction to Cybernetics (1956), Part 2: Variety, p. 140

1960s–1970s, A Conversation with Professor Friedrich A. Hayek (1979)
Source: Meaning And Necessity (1947), p. v: Preface
p. 46-47.

Hannity's America, May 13, 2007 interview https://www.youtube.com/watch?v=dWoHh4_rVdg http://transcripts.wikia.com/wiki/Sean_Hannity_Christopher_Hitchens_Hannity%27s_America_May13%2C_2007?venotify=created
2000s, 2007
Allen B. Rosenstein and Phillip Burgess (1988) "U.S. Competitiveness." Bureaucrat. Vol. 17-18. p. 21.
Donald Routledge Hill, "Mechanical Engineering in the Medieval Near East", Scientific American, May 1991, pp. 64-9.
Further Studies in a Dying Culture (1949), Chapter IV: Consciousness: A Study in Bourgeois Psychology

Scholarship and service : the policies of a national university in a modern democracy https://archive.org/details/scholarshipservi00butluoft (1921)

and you pretend to be asleep. You press A button rhythmically, to control your breath, to keep even.
Letter to Nintendo, pg 40.
Overqualified

S. Rajasekar, N.Athavan, "Ludwig Edward Boltzmann"
Attributed
in I don't believe in word senses http://www.kilgarriff.co.uk/Publications/1997-K-CHum-believe.pdf (1997), p. 25

Leftist Critiques of Identity Politics (2018)

1930s, On my Painting (1938)

http://www.samharris.org/site/full_text/honesty-the-muslim-worlds-scarcest-resource 2012-03-01 Honesty: The Muslim World’s Scarcest Resource? - SamHarris.com, accessed March 1, 2012
2010s

Speech to the thirtieth anniversary of the Junior Imperial League in Kingsway Hall (19 June 1926), quoted in Our Inheritance (London: Hodder and Stoughton, 1938), p. 19.
1926

“I don’t let go of concepts—I question them. Then they let go of me.”
Loving What Is: Four Questions That Can Change Your Life (2002)
Source: Where There's a Will: Thoughts on the Good Life (2003), Ch. 15 : Interesting Times
Source: Extending and Formalizing the Framework for Information Systems Architecture, 1992, p. 590

Vol. 4, Part: 1. Chapter 2 Pg. 47 - "Rule of the Sullan Restoration" Translated by W.P. Dickson.
The History of Rome - Volume 4: Part 1

Quote in 'The end of Art', in De Stijl; Theo van Doesburg – series XII, 1924-5, pp. 135–136
1920 – 1926
Part II, Chapter 7, Attractor Points, p. 140
The Death of Economics (1994)

Source: "The Latest Attack on Metaphysics" (1937), p. 146.

Time and Individuality (1940)

Kálmán (1972), cited in: Lotfi A. Zadeh (2004) Fuzzy Logic Systems, origin, concepts and trends http://wi-consortium.org/wicweb/pdf/Zadeh.pdf November 10, 2004

Wikinews Interview http://en.wikinews.org/wiki/%22Avast_ye_scurvy_file_sharers%21%22:_Interview_with_Swedish_Pirate_Party_leader_Rickard_Falkvinge (June 20, 2006)

Also quoted in "Hints For Judo" by D. Risei Kano, at usadojo.com http://www.usadojo.com/articles/hints-judo.htm
Kodokan Magazine (1974)
L.K. Frank (1948) "Foreword". In L. K. Frank, G. E. Hutchinson, W. K. Livingston, W. S. McCulloch, & N. Wiener, Teleological mechanisms. Ann. N. Y. Acad. Sc., 1948, 50, 189-96; As cited in: Ludwig von Bertalanffy (1968) "General System Theory: Foundations, Development, Applications". p. 16-17

“My concept of secularism is to be a good human being who respects all religions.”
Quoted in "Sunil Dutt — film star, peace activist, secularist, politician extraordinary" in The Hindu.
We all are one, whichever religion we belong to

Speech in the European Parliament, 24 February 2010 - Ukip's Nigel Farage tells Van Rompuy: You have the charisma of a damp rag http://www.guardian.co.uk/world/2010/feb/25/nigel-farage-herman-van-rompuy-damp-rag, The Guardian, 24 February 2010.
2010

Address to the Catholic Institute of Paris (November 19, 2016)

Theory of Knowledge
Gesammelte Mathematische Werke (1876)

Video History interview (1995)

Footnote: In the future by 'mathematics' will always be meant 'pure mathematics'.
The Foundations of Mathematics (1925)

Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), The Harmony of Determinism and Freedom, p.333-4

Source: The Light of Day (1900), Ch. XI: Points of View

Source: The Living Brain (1953), p. 82.
Allen B. Rosenstein and Phillip Burgess (1988) "U.S. Competitiveness." Bureaucrat. Vol. 17-18. p. 21.

"Exclusive Interview With Mark Zuckerberg" (Nov. 30, 2004) http://www-bcf.usc.edu/~fbar/comm570/Readings/markzuckerberginterview.pdf

The Brighter Side of Human Nature: Altruism and Empathy in Everyday Life, 1990.

Source: About Looking (1980), Chapter "Why Look at Animals?"
Source: Emerson: The Mind on Fire (1995), p. 97

Source: The Life of a Painter - autobiography', 1946, Letters of the great artists', 1963, p. 248

1915 - 1925, Theses on the 'PROUN': from painting to architecture' (1920)
Romantische Harmonik und ihre Krise in Wagners Tristan (1920), p. 273.

The Philosophy of Atheism (1916)

Bukhari 1:8 http://www.sacred-texts.com/isl/bukhari/bh1/bh1_07.htm
Sunni Hadith