Quotes about introduction
A collection of quotes on the topic of introduction, use, first, other.
Quotes about introduction

“When a man loves cats, I am his friend and comrade, without further introduction.”
Source: Who Is Mark Twain?

Source: Shaping the world economy, 1962, p. 3 : Lead in paragraph "introducing the book"

Source: Essai de semantique, 1897, p. 9 ; as cited in: Schaff (1962:3).

Source: Capitalism and Modern Social Theory (1971), p. 37.

Source: Woman, Church and State (1893), p. 301

But since the Lecompton bill no Democrat, within my experience, has ever pretended that he could see the end. That cry has been dropped. They themselves do not pretend, now, that the agitation of this subject has come to an end yet.
1860s, Allow the humblest man an equal chance (1860)

§ 134
2010s, 2015, Laudato si' : Care for Our Common Home

Henry Agard Wallace (1973), Democracy reborn, p. 96; cited in: Gerard F. Vaaughn, " Benjamin H. Hibbard: Scholar for Policy Making http://ageconsearch.umn.edu/bitstream/132025/2/BenjaminHibbard.pdf," in Choices, First Quarter 1998, p. 38.

Source: Speech http://hansard.millbanksystems.com/commons/1848/jun/05/expulsion-of-the-british-ambassador-from in the House of Commons (5 June 1848).

First Annual Address, to both House of Congress (8 January 1790)
1790s
““All my teachings are only introductions, [the main part is up to you to discover]” (SH 199)”
Attributed

Disputed

“The key to growth is the introduction of higher dimensions of consciousness into our awareness.”
Source: Anam Cara: A Book of Celtic Wisdom

“So perhaps the best thing to do is to stop writing Introductions and get on with the book.”
Source: Winnie-the-Pooh

Variant: It must be considered that there is nothing more difficult to carry out, nor more doubtful of success, nor more dangerous to handle, than to initiate a new order of things.
Source: The Prince (1513), Ch. 6
Context: It ought to be remembered that there is nothing more difficult to take in hand, more perilous to conduct, or more uncertain in its success, than to take the lead in the introduction of a new order of things. Because the innovator has for enemies all those who have done well under the old conditions, and lukewarm defenders in those who may do well under the new. This coolness arises partly from fear of the opponents, who have the laws on their side, and partly from the incredulity of men, who do not readily believe in new things until they have had a long experience of them.

Though sometimes attributed to Addison, this actually comes from a speech delivered by the Irish lawyer Charles Phillips in 1817, in the case of O'Mullan v. M'Korkill, published in Irish Eloquence: The Speeches of the Celebrated Irish Orators (1834) pp. 91-92.
Misattributed

in Art of this Century, February 12 – March 2, 1946, Peggy Guggenheim Papers on the work of Clyfford Still; as quoted in Abstract Expressionism Creators and Critics, ed. Clifford Ross, Abrams Publishers New York 1990, p. 203
1940's

TV Series and Specials (Includes DVDs), Mind Control (1999–2000) or Inside Your Mind on DVD
Source: Leisure, the Basis of Culture (1948), The Philosophical Act, pp. 66—67

Source: Elements of Refusal (1988), p. 108

I was sent to Athens http://www.hri.org/docs/Morgenthau/

1870s, Fourth State of the Union Address (1872)

A Plaine Discovery of the Whole Revelation of St. John (1593)

"On the Philosophy of the Asiatics" (1794)

Abstract, 2009 edition:
Politics and Administration (1900)

One of the Better Pages in the Universe. http://maddox.xmission.com/c.cgi?u=april_fools04
The Best Page in the Universe, April Fools

Bill Nye, "Science Guy," Open to Jail Time for Climate Change Skeptics http://reason.com/blog/2016/04/15/bill-nye-science-guy-open-to-jail-time-f in Reason.com (15 April 2016)

New Preface to Literary Theory: An Introduction, Anniversary Edition, (2008)
2000s

My Life and Confessions, for Philippine, 1786

George Gamow, in his autobiography My World Line: An Informal Autobiography (1970), p. 44. Here the "cosmological term" refers to the cosmological constant in the equations of general relativity, whose value Einstein initially picked to ensure that his model of the universe would neither expand nor contract; if he hadn't done this he might have theoretically predicted the universal expansion that was first observed by Edwin Hubble.
Attributed in posthumous publications

(1847)

Broadcast (30 July 1950) on the Korean War, quoted in The Times (31 July 1950), p. 4.
1950s

pg. 269
The Sports and Pastimes of the People of England (1801), Bowling alleys
Source: Crisis Management: A Model For Managers (1993), p. 19

Source: Quotes of Paul Cezanne, after 1900, Cézanne, - a Memoir with Conversations, (1897 - 1906), p. 198 in: 'What he told me – II. The Louvre'

Source: The Rise of the Network Society, 1996, p. 16-17 as cited in: Andy Hargreaves (2003) Teaching in the Knowledge Society: Education in the Age of Insecurity. p. 16
The Novel and the Police (1988), p. vii

Le Manifeste du Surréalisme, Andre Breton (Manifesto of Surrealism; 1924)

Reported in Josiah Hotchkiss Gilbert, Dictionary of Burning Words of Brilliant Writers (1895), p. 141.

John Maynard Keynes: 1883-1946: Economist, Philosopher, Statesman (2003), Introduction

Source: Russia Under The Bolshevik Regime (1994), p. 260

After a few more questions, he asked me to see him again and very soon I found myself entering the Indian Foreign Service.
Source: Gopal Gandhi Of a Certain Age: Twenty Life Sketches http://books.google.co.in/books?id=Inp4jPFUHUkC&pg=PA178, Penguin Books India, 2011, p. 178
1920s
Source: 'Merz. Für den Ararat geschrieben' (1920); as quoted in Kurt Schwitters Merzbau: The Cathedral of Erotic Misery, by Elizabeth Burns Gamard, Princeton Architectural Press, New York, 2000, p. 40, note 16

Source: 1930s- 1950s, The End of Economic Man (1939), p. 39
Henri Poincaré, Critic of Crisis: Reflections on His Universe of Discourse (1954), Ch. 2. The Age of Innocence

The Zollverein and British Industry (1903), pp. 159-160
1900s

Speech given at a Dean Martin Celebrity Roast. Viewable here http://www.youtube.com/watch?v=VlKR0i-51S4.

“The introduction of a year of compulsory work for every German.”
Source: The German State on a National and Socialist Foundation (1923), p. 54

" Philosophy" (a lecture delivered at Columbia University in the series on science, philosophy and art, March 4, 1908) https://archive.org/details/philosophyalect00butlgoog"

The Best Page In The Universe. http://maddox.xmission.com/
The Best Page in the Universe

Any Questions?, BBC Radio (29 November 1968), from Reflections of a Statesman. The Writings and Speeches of Enoch Powell (London: Bellew, 1991), p. 395
1960s

Source: 1850s, A treatise on differential equations (1859), p. v; cited in: Quotations by George Boole http://www-history.mcs.st-and.ac.uk/Quotations/Boole.html, MacTutor History of Mathematics, August 2010.

In this advice was much wisdom. It consists, you see, in advising to begin, at the beginning, and to stop when you have done.
Thirdly, and always,
Use Your Own Language.
I mean the language you are accustomed to use in daily life.
How To Do It (1871)

As state president, unveiling a monument to Boer War victims at Delareyville, 10 October 1985, as cited in PW Botha in his own words, Pieter-Dirk Uys, 1987, p. 34
Source: Principles of management, 1968, p. 1 (1972 edition)

"Jihad's Triumph On Westminster Bridge" https://townhall.com/columnists/ilanamercer/2017/03/30/jihads-triumph-on-westminster-bridge-n2306480 Townhall.com, March 30, 2017
2010s, 2017

1962, Second Letter to Nikita Khrushchev

Talk at the Englert Theatre in Iowa, April 10, 2006 http://www.greenteaphd.com/greenteablog/?p=252
Quotes 2000s, 2006

Speech in Ottawa, Illinois http://www.bartleby.com/251/11.html (21 August 1858)
1850s
Process Innovation: Reengineering Work through Information Technology, 1993

Source: History of Mathematics (1925) Vol.2, Ch. 6: Algebra

My father rose to the podium, stared down at the audience, and said without skipping a beat, "My God, it's hot in here! It must be at least 180 degrees".
Eulogy for a Fighter Pilot (1998)

S. W. R. D. Interview with BBC, 1956 https://www.youtube.com/watch?v=NP13RWkd4vM
Source: Men Under Stress, 1945, p. 38-39 cited in: The Clare Spark Blog (2009) Strategic Regression in “the greatest generation” http://clarespark.com/2009/12/09/strategic-regression-in-the-greatest-generation/ December 9, 2009

Speech http://hansard.millbanksystems.com/commons/1987/dec/01/elimination-of-poverty-in-old-age-etc in the House of Commons (1 December 1987).
1980s

Joint memoir with Einstein (1932) as quoted by Gerald James Whitrow, The Structure of the Universe: An Introduction to Cosmology (1949)

Es ist das schönste Los einer physikalischen Theorie, wenn sie selbst zur Aufstellung einer umfassenden Theorie den Weg weist, in welcher sie als Grenzfall weiterlebt.
Über die spezielle und die allgemeine Relativitätstheorie (1920) Tr. Robert W. Lawson, Relativity: The Special and General Theory (1920) pp. 90-91.
1920s

Dantzig (1986) in: D.J. Albers and C. Reid "An interview with George B. Dantzig : the father of linear programming". In: The College Mathematics Journal Vol 17, nr 4, 1986, p. 293-314.

Address to the Gridiron Club (27 April 1931)

The Relation of the State to the Invididual (1890)
Hindu View of Christianity and Islam (1992)

Source: 2010s, 2010, Decision Points (November 2010), p. 121

Quoted in P.M. Currie, The Shrine and Cult of Mu‘in al-Dîn Chishtî of Ajmer, OUP, 1989 p. 74-87 and quoted in Ram Swarup, Hindu View of Christianity and Islam (1992)

pg. 396
The Sports and Pastimes of the People of England (1801), Initiation

R. Brown and T. Porter,Analogy, concepts and methodology, in mathematics, UWB Math Preprint, May 26,2006 Link http://math.stanford.edu/~vakil/216blog/FOAGjun1113public.pdf

Descriptio Globi Intellectualis (1653, written ca. 1612) Ch. 6, as quoted in "Description of the Intellectual Globe," The Works of Francis Bacon (1889) pp. 517-518, https://books.google.com/books?id=lsILAAAAIAAJ&pg=PA517 Vol. 4, ed. James Spedding, Robert Leslie Ellis, Douglas Denon Heath.

Prose Quotations from Socrates to Macaulay, 1880

Well, we were foolish. And now the plague is upon us.
Introduction
The Return of Depression Economics and The Crisis of 2008 (2009)
Hano, Arnold (1967). Greatest Giants of Them All. New York, NY: G.P. Putnam's Sons. pp. 248–249.
Sports-related

c. 1921
Quote from 'Chagall in the Yiddish Theater', Avram Kampf, as quoted in Marc Chagall - the Russian years 1906 – 1922, editor Christoph Vitali, exhibition catalogue, Schirn Kunsthalle Frankfurt, 1991, p. 101
1920's