According to Marike Finlay (1987) Powermatics: A Discursive Critique of New Technology. p. 200 with this statement "Kenneth Boulding has shown, the extent of control is a function of loss-of-strength gradient of a political centre."
Source: 1960s, Conflict and defense: A general theory, 1962, p. 245
Quotes about power
page 53

1910s, Address to Congress: Analyzing German and Austrian Peace Utterances (1918)

The Anti-Slavery Movement. Extracts from a Lecture before Various. Anti-Slavery Bodies, in the Winter of 1855.
1850s, My Bondage and My Freedom (1855)

The Life and letters of Samuel Palmer, Painter and Etcher (AH Palmer, London, 1892)

Letter to President Franklin D. Roosevelt (August 2, 1939, delivered October 11, 1939); reported in Einstein on Peace, ed. Otto Nathan and Heinz Norden (1960, reprinted 1981), pp. 294–95
1930s

The Pit of Hell!: Unbelievable Satanic Deception Flooding the Earth! (1983)

Source: Enough: Staying Human in an Engineered Age (2003), p. 198

“The possession of great powers, no doubt, carries with it a contempt for mere external show.”
“Life and Character of Almeda A. Booth”, Memorial address at Hiram College, (22 June 1876), in President Garfield and Education : Hiram College Memorial (1881) by B. A. Hinsdale, p. 420 http://books.google.com/books?id=rA4XAAAAYAAJ
1870s

“Harm is in us.
Harm in us, but power to arm.
Harm is in us.
Leave it open!”
Song lyrics, The Dreaming (1982)
“Order is the priority of power.”
Ch 9
The Rahotep series, Book 2: Tutankhamun

As quoted in The Life Of Lord Courtney (1920) by G. P. Gooch
The statement "The price of peace is eternal vigilance" has been widely attributed to others, including George Marshall, however even Courtney's use of it is probably derived from an earlier statement with several variants:
The price of freedom is eternal vigilance.
The price of liberty is eternal vigilance.
Eternal vigilance is the price of liberty.

Source: Why Men Are the Way They Are (1988), p. 9.

Title poem
The Venetian Bracelet (1829)
The Divine Commodity: Discovering A Faith Beyond Consumer Christianity (2009, Zondervan)

Source: Think Big (1996), p. 100

Source: What is to be Done? (1902), Chapter Three, Section E, Essential Works of Lenin (1966)

Speech in the House of Commons (16 May 1820), quoted in George Henry Francis, Opinions and Policy of the Right Honourable Viscount Palmerston, G.C.B., M.P., &c. as Minister, Diplomatist, and Statesman, During More Than Forty Years of Public Life (London: Colburn and Co., 1852), pp. 15-16.
1820s

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

Letter to Samuel W. Pennypacker by George H. Earle, Jr. (16 May 1906)

Source: 2000s, A New Birth of Freedom: Abraham Lincoln and the Coming of the Civil War (2000), p. 231
“Fear, that unknowable and all-powerful enemy, has invaded us all, like a secret army of shadows.”
Ch 2
The Rahotep series, Book 2: Tutankhamun
Sheldon Wolin, Politics and Vision: Continuity and Innovation in Western Political Thought (1960, revised 2004), p. 591

The Monroe Doctrine http://books.google.com/books?id=a6QZAAAAYAAJ&q=%22The+American+continents+by+the+free+and+independent+condition+which+they+have+assumed+and+maintain+are+henceforth+not+to+be+considered+as+subjects+for+future+colonization+by+any+European+power%22&pg=PA11#v=onepage.
The Monroe Doctrine (2 December 1823)

“As you intend to live hereafter, it is in your power to live here.”
Volume 2: Lake of the Long Sun (1994), Ch. 1
Fiction, The Book of the Long Sun (1993–1996)

Quote in his 'Preface' by Richard Huelsenbeck, New York, November 1958, in Phantastische Gebete; published by Arche Verlag, Zurich, 1960 (transl. by Johannes Beilharz, 2000)
Technology and Justice (Notre Dame: 1986), p. 13

Source: 1960s - 1980s, MANAGEMENT: Tasks, Responsibilities, Practices (1973), Part 1, p. 224
Source: To run a constitution, 1986, p. 181

Sweet Morality (p. 235)
The Immortalization Commission: The Strange Quest to Cheat Death (2011)

Sedea colà, dond'egli e buono e giusto
Dà legge al tutto, e 'l tutto orna e produce
Sovra i bassi confin del mondo angusto,
Ove senso o ragion non si conduce.
E della eternità nel trono augusto
Risplendea con tre lumi in una luce.
Ha sotto i piedi il Fato e la Natura,
Ministri umíli, e 'l moto, e chi 'l misura; <p> E 'l loco, e quella che qual fumo o polve
La gloria di qua giuso e l'oro e i regni,
piace là su, disperde e volve:
Nè, Diva, cura i nostri umani sdegni.
Quivi ei così nel suo splendor s'involve,
Che v'abbaglian la vista anco i più degni;
D'intorno ha innumerabili immortali
Disegualmente in lor letizia eguali.
Canto IX, stanzas 56–57 (tr. Edward Fairfax)
Max Wickert's translation:
He sat where He gives laws both good and just
to all, and all creates, and all sets right,
above the low bounds of this world of dust,
beyond the reach of sense or reason's might;
enthroned upon Eternity, august,
He shines with three lights in a single light.
At His feet Fate and Nature humbly sit,
and Motion, and the Power that measures it,<p>and Space, and Fate who like a powder will
all fame and gold and kingdoms here below,
as pleases Him on high, disperse or spill,
nor, goddess, cares she for our wrath or woe.
There He, enwrapped in His own splendour, still
blinds even worthiest vision with His glow.
All round Him throng immortals numberless,
unequally equal in their happiness.
Gerusalemme Liberata (1581)

"Chapter II," Babe Ruth's Own Book of Baseball (1928), pp. 19-20; reprinted as "Babe Ruth's Own Story — Chapter II: Baseball Game Is Like a Battle; Two Big Divisions, Offense and Defense; What They Are," https://news.google.com/newspapers?id=rksbAAAAIBAJ&sjid=J0sEAAAAIBAJ&pg=2024%2C3275342&dq=if-read-newspapers-way-team-plays-whole in The Pittsburgh Press (December 21, 1928), p. 52

2014, Speech: Sponsorship Speech for the FY 2015 National Budget

The earliest known appearance of this statement is from 1895 (Joshua Douglass, "Bimetallism and Currency", American Magazine of Civics, 7:256). It is apparently a combination of paraphrases or approximate quotations from three separate letters of Jefferson (longer excerpts in sourced section):
I sincerely believe, with you, that banking institutions are more dangerous than standing armies...
Letter to John Taylor (1816)
The bank mania...is raising up a moneyed aristocracy in our country which has already set the government at defiance...
Letter to Josephus B. Stuart (1817)
Bank paper must be suppressed, and the circulating medium must be restored to the nation to whom it belongs.
Letter to John W. Eppes (1813)
Misattributed

"Depressions: Can we learn from past experience?" in Schumpeter, Joseph A.; Chamberlin, Edward; Leontief, Wassily W.; Brown, Douglass V.; Harris, Seymour E.; Mason, Edward S.; Taylor, Overton H., The economics of the recovery program (1934)

Inaudible Melodies.
Song lyrics, Brushfire Fairytales (2001)

"The Demonization Of Whites By Mrs. Bill Gates & Other Dangerous Idiots," https://constitution.com/the-demonization-of-whites-by-mrs-bill-gates-other-dangerous-idiots/ Constitution.com, June 8, 2018
2010s, 2018
Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 171.

Letter to F. W. Cobden (23 March 1844) on the Factory Act 1844, quoted in John Morley, The Life of Richard Cobden (London: T. Fisher Unwin, 1905), p. 302.
1840s

"Report on the Activities of the Council of People’s Commissars" (24 January 1918); Collected Works, Vol. 26, pp. 459-61.
1910s

Bill signing ceremony for California's strict anti-emissions law (26 September, 2006) http://www.msnbc.msn.com/id/15029070/.
2000s

Quote from Cézanne's letter to Émile Bernard, 23 October 1905; as quoted in Letters of the great artists – from Blake to Pollock, Richard Friedenthal, Thames and Hudson, London, 1963, p. 180
Quotes of Paul Cezanne, after 1900

Source: On Representative Government (1861), Ch. III: The Ideally Best Polity
Source: History and Truth in Hegel’s Phenomenology (1979), p. 4

Carl Kozlowski (September 11, 2008) "Taste in the making: Tool’s Maynard James Keenan shifts his focus from writing dark lyrics to creating zesty wines" http://www.pasadenaweekly.com/cms/story/detail/taste_in_the_making/6378/, Pasadena Weekly. Southland Publishing.

Source: Evolution and Theology (1900), pp. 10-11.
Referring to the 60's youth movements
Edie : Girl On Fire (2006)

2
"The Hermeneutics of Suspicion: Recovering Marx, Nietzsche, and Freud"

Hoping George VI's illness would allow him to resume the throne. Quoted by Christopher Wilson, The Telegraph, 22 Nov 2009 http://www.telegraph.co.uk/news/uknews/theroyalfamily/6624594/Revealed-the-Duke-and-Duchess-of-Windsors-secret-plot-to-deny-the-Queen-the-throne.html

The Daily Chronicle and New York Times (April 23, 1919), Paul Miliukov, Bolshevism: An International Danger, London: UK, Taylor & Francis e-Library, 2010, pp. 75-76, first published in 1920
1910s
Source: The Last Lion: Winston Spencer Churchill: Alone 1932-1940 (1988), p. 688-689

Source: Quotes:, Autobiography of Sir Henry Morton Stanley (1909), p. 523

p. 336 http://books.google.com/books?id=zAhJAAAAMAAJ&pg=PA336; Cited in: Edmund Ruffin An Essay on Calcareous Manures, Volume 1. J.W. Randolph, 1852. p. 85.
Ruffin summarizes:
"Humus" is the term used by this author for the decomposed vegetable and other organic matter which is more or less mixed with all surface soil, and which gives to soil all its fertility, and furnishes all the food of plants.
The Principles of Agriculture, 1844, Section III: Agronomy

Putin is turning the Syrian coast into another Crimea http://nypost.com/2015/09/19/putin-is-turning-the-syrian-coast-into-another-crimea/, New York Post (September 19, 2015).
New York Post
"The Taste of the Age," The Saturday Evening Post (1958-07-26) [p. 290]
Kipling, Auden & Co: Essays and Reviews 1935-1964 (1980)

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

p, 125
"On the Philosophy of the Asiatics" (1794)

Source: Comfort and Protest (1987), pp. 65-66

Clive James From the Land of Shadows (London: Picador, 1983) p. 206.
Criticism

As A Man Thinketh (1902)
Variant: Mind is the Master Power that molds and makes, And we are mind. And ever more we take the tool of thought, and shaping what we will, bring forth a thousand joys, or a thousand ills. We think in secret, and it comes to pass, environment, is but our looking glass.

Gompers, Samuel. The Samuel Gompers Papers. Stuart Bruce Kaufman, Peter J. Albert, Grace Palladino, and Marla J Hughes, eds. Urbana, Ill.: University of Illinois Press, 2000, p. 137.

The Secret of Efficient Expression (1911)
The Other Half: A Self Portrait http://books.google.com/books?id=4gg0AAAAMAAJ&q=%22In+time+of+war+all+countries+behave+equally+badly+because+the+power+of+action+is+handed+over+to+stupid+and+obstinate+men%22&pg=PA4#v=onepage (1977)

“Today, the power of women rings a bit differently and you can feel the shift.”

“I lack what the English call character, by which they mean the power to refrain.”
An Englishman Abroad (1983).
Muslim Separatism – Causes and Consequences (1987)
Source: Embodiments of Mind, (1965), p. 347 cited in: Roberto Moreno-Díaz, José Mira, Warren Sturgis McCulloch (1996) Brain processes, theories, and models: an international conference in honor of W.S. McCulloch 25 years after his death. p. 9

What the Fox News Bill O'Reilly fiasco teaches businesses http://cio.com/article/3193003/leadership-management/what-the-fox-news-bill-o-reilly-fiasco-teaches-businesses.html in CIO (28 April 2017)

The Golden Violet - The Wreath
The Golden Violet (1827)

On the differences between the present and the time of the space race which existed during the Cold War years, in an interview at The New Space Race (August 2007)

The Hindu, "1947, first-hand ", Sunday, Aug 15, 2004 Available Online http://www.hinduonnet.com/mag/2004/08/15/stories/2004081500530300.htm
2000s

Mont Saint Michel and Chartres (1904)

"Svetlana Alliluyeva describes how she changed from Atheism", Daytona Beach Morning Journal, (May 20, 1967)
Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 323.
March 24, 1966, page 216.
Official Report of Proceedings of the Hong Kong Legislative Council
Speech at Moorpark College, Moorpark, California (3 December 1968).
Other