A statement by Safir posted on JoinRudy2008.com, Rudy Giuliani's official presidential campaign website anouncing the creation of "First Responders for Rudy"
[Howard Safir, http://www.joinrudy2008.com/article/index/748, Rudy Giuliani Unveils National First Responders Coalition, Rudy Giuliani Presidential Committee, Inc., 2007-08-28, 2007-12-20]
Quotes about leadership
page 4

Birmingham Post, 21 January 2006

Source: The international economy from a political to an authoritative drive, p. 129

Quoted in "Memoirs of Nikita Khrushchev" - by Nikita Sergeevich Khrushchev - Heads of state - 2007
Source: Organizations and Environments, 1979, p. 204
Architecture in Britain, 1530–1830

Mad Maxine Waters Brags That She Threatens Trump Supporters ‘All The Time’, Dailywire, 10 September 2018
What Matters in Corporate Governance?, (2015)
"The Disciples of Christ and the City" World Call 1 (July, 1919)

1920s, Speech on the Anniversary of the Declaration of Independence (1926)

“Why the United States Is Destroying Its Education System” (2011)
We nominated Jeremy Corbyn for the leadership. Now we regret it (6 May 2016)

“Observe leaders closely, learn as much as you can from their leadership styles.”
How I made it: CNR Rao, Scientist (2010)

J. Bradford DeLong and Barry Eichengreen, "New preface to Charles Kindleberger, The World in Depression 1929-1939" http://www.voxeu.org/article/new-preface-charles-kindleberger-world-depression-1929-1939 (2012)
page 52, The Hindu Phenomenon, ISBN 81-86112-32-4.
On Peoples, On Mahatma Gandhi

King Center CEO Bernice A. King Statement on the Death of Nelson Mandela (06 December 2013) http://www.thekingcenter.org/news/2013-12-king-center-ceo-bernice-king-statement-death-nelson-mandela

The People's Rights [1909] (London: Jonathan Cape, 1970), p. 24
Early career years (1898–1929)

Broadcast (5 June 1945) for the 1945 general election, quoted in The Times (6 June 1945), p. 2.
1940s
"The Shiite Obligation", Wall Street Journal (February 7, 2005)

page 23 in "Live or die with supply management", chapter 5 previewed April 2018 http://www.maximebernier.com/my_chapter_on_supply_management of "Doing Politics Differently: My Vision for Canada"

1977, Minhaj al-inqilab al-Islami. (The method of Islamic Revolution) p. 19.
1970s
Source: Organization and Management: Selected Papers (1948), p. 240; cited in: Philip Selznick, Leadership in Administration: A Sociological Interpretation, 1957, p. 32.

Colin Wilson in The Essential Colin Wilson, p. 216
The Essential Colin Wilson (1985)

1996 Chairman's Letter http://www.berkshirehathaway.com/letters/1996.html
Letters to Shareholders (1957 - 2012)

Stig Toft Madsen, et al, in: "Trysts with Democracy: Political Practice in South Asia}, P.80-81

Statement http://www.margaretthatcher.org/document/108254 announcing her intention to resign the premiership (22 November 1990).
Third term as Prime Minister

reported in Donald T. Phillips, Run To Win: Vince Lombardi on Coaching and Leadership (2001), pg. 180.
Mississippi’s Chris McDaniel: Oust Boehner http://www.breitbart.com/big-government/2015/01/05/mississippis-chris-mcdaniel-oust-boehner/ (January 5, 2015)
Source: The Classification Research Group 1952—1962 (1962), p. 127

His lecture on leadership quoted in "Field Marshal KM Kariappa Memorial Lectures, 1995-2000", page=26

CNN Interview (10 December 2003) http://transcripts.cnn.com/TRANSCRIPTS/0312/10/ltm.12.html

James M. McPherson. Abraham Lincoln, (2009) p. 65
2000s

“Leadership is the art of accomplishing more than the science of management says is possible.”
2000s, The Powell Principles (2003)

Source: Understanding International Conflicts: An Introduction to Theory and History (6th ed., 2006), Chapter 7, Globalization and Interdependence, p. 218.

1920s, Toleration and Liberalism (1925)
Source: "The Management Theory Jungle," 1961, p. 178

Source: Discussion with reporters Portia Li and Carla Marinucci, in San Francisco http://web.archive.org/web/20060427191647/http://www.sfgate.com/cgi-bin/object/article?f=/chronicle/archive/2005/06/07/MNdean07.TMP&o=1, June 6, 2005

Rep. Steve King: ‘DACA’ – ‘Delivering Amnesty to Central Americans’ http://www.breitbart.com/big-government/2017/09/26/exclusive-rep-steve-king-daca-delivering-amnesty-central-americans/ (September 26, 2017)

Speech declaring bid for the Conservative Party leadership http://www.independent.co.uk/news/uk/politics/theresa-mays-tory-leadership-launch-statement-full-text-a7111026.html (30 June 2016)

Omarosa on African Americans for Trump: ‘If You Want Something You’ve Never Had, You’ve Got to Do Something You’ve Never Done’ http://www.breitbart.com/radio/2016/09/23/omarosa-african-americans-for-trump-if-you-want-something-youve-never-had-youve-got-do-something-youve-never-done/ (September 23, 2016)
University of Colorado Leeds School of Business Commencement Address (2013)

Source: Radical Christian Discipleship (2012), p. 41

Wan Azizah Wan Ismail (2018) cited in " Wan Azizah reiterates plan to step down once Anwar becomes PM https://www.nst.com.my/news/nation/2018/09/412288/wan-azizah-reiterates-plan-step-down-once-anwar-becomes-pm" on New Straits Times, 17 September 2018

"Islam, Not Trump, Is The Elephant In The Room, Threatening Jewish Survival" https://townhall.com/columnists/ilanamercer/2017/02/23/islam-not-trump-is-the-elephant-in-the-room-threatening-jewish-survival-n2289643 Townhall.com, February 23, 2017
2010s, 2017

Speech at an anti-EEC rally (3 June 1975), quoted in 'Heath attack by Mr Benn', The Times (4 June 1975), p. 6
1970s

1962, Address at Independence Hall

version in original Dutch (citaat van Johannes Bosboom, in Nederlands): De romantische beweging onder aanvoering van den genialen nl:Wijnand Nuijen trok ook mij aan tot volgen. En al verviel men langs dien weg in gekleurdheid en opgesmuktheid, vaak ontaardend in chic; er ontsproot daaruit later een meer verstandig zoeken naar verlevendiging van coloriet, verhooging van effect, vermeerdering van reliëf.
Quote from Bosboom's small autobiography, 1891; as cited in De Hollandsche Schilderkunst in de Negentiende Eeuw, G. H. Marius; https://ia800204.us.archive.org/31/items/dehollandschesch00mariuoft/dehollandschesch00mariuoft.pdf Martinus Nijhoff, s-'Gravenhage / The Hague, tweede druk, 1920, pp. 74-75 (translation from the original Dutch: Fons Heijnsbroek)
1890's

Don Soderquist “ Live Learn Lead to Make a Difference https://books.google.com/books?id=s0q7mZf9oDkC&lpg=pg=PP1&dq=Don%20Soderquist&pg=PP1#v=onepage&q&f=false, Thomas Nelson, April 2006 p. 153.
On Building Trust
Source: The Principles of Organization, 1947, p. 17
“Changing things is central to leadership. Changing them before anyone else is creative leadership”
Recently often attributed to Ordway Tead.
Attributed to Antony Jay in older sources, see: Public Administration Review (1977). Vol. 15. p. 20.
Also called "Jay's Laws of Leadership", see: Paul Dickson (1999) The official rules and explanations. p. 33. This source states:
Jay's Laws of Leadership
#Changing things is central to leadership, and changing them before anyone else is creativeness.
#To build something that endures, it is of great importance to have a long tenure in office-to rule for many years. Quick success can be achieved in a year or two, but nearly all great tycoons have continued their building much longer.
Disputed

As quoted in "The World Almanac and Book of Facts" (1969), p. 159

Quoted in "The Arms Control Reporter: A Chronicle of Treaties, Negotiations, Proposals" - by Institute for Defense and Disarmament Studies (U.S.) - Arms control - 1982 - Page 57.

Massad, in Palestinian and Jewish History: Recognition or Submission? in the Autumn 2000 issue of the Journal of Palestine Studies.
On Comparisons of Israel to Nazi Germany

[David, Horowitz, http://www.jewishworldreview.com/cols/horowitz.html, "As a former 'Radical,' I see the threat of Militant Islam on our Campuses,", jewishworldreview.com, April 08, 2003, 2010-01-04]
2003

1920s, Speech on the Anniversary of the Declaration of Independence (1926)

The New York Times, "A Conversaton with Laraine Day, Hollywood's Girl Next Door", June 9, 1984.

Announcing his candidacy to be Tory leader and Prime Minister http://www.bbc.co.uk/news/uk-politics-36679741 (1 July 2016)
2016

Montrose and Leadership (1930), p 24; republished in Men and Deeds (1977)

About the Situationist International movement
Report on the Construction of Situations (1957)

Source: IQ and technical skills are important, but emotional intelligence is the sine qua non of leadership (1998), p. 94

While addressing mourners during the funeral of Martha Nyokabi, who was a District Officer at Kigoro in Gatanga district. Kenya deserves good leaders, says Kenneth, nation.co.ke, 2012, 11 August 2012 http://www.nation.co.ke/News/politics/-/1064/1476418/-/9fxys5/-/index.html,
As cited in Wren & Bedeian (1972;411)
Principles of Management, 1960

Source: 1940s, Action research and minority problems, 1946, p. 36.

Scottish Government's relationship with Europe (July 11, 2007)

The Official Website of the Senate of the Philippines http://www.senate.gov.ph/press_release/2008/0229_escudero1.asp
2008

Source: Science - The Endless Frontier (1945), Ch. 1 "Introduction"

Remark, reported in The New York Post (24 November 2003)

Muqaddimah, Translated by Franz Rosenthal, p. 118, Princeton University Press, 1981.
Muqaddimah (1377)

Third Session of Parliament (June 30, 2007)

From Madonna's open letter about the War in Iraq & the Bush administration http://www.foxnews.com/story/0,2933,107771,00.html

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. 11.
On Having a Personal Mission and Vision

Source: Making Mondragón, 1965, p. 176-177; As cited in: Ickis (2014)

Page 185. Satin had become president of SDS at SUNY Binghamton during the summer 1966 trimester. "Jean" is one of the far-left SDS leaders Satin had deposed. She is also the "girl" referred to n the previous quote.
Confessions of a Young Exile (1976)
context (14) “Storm Centre”
Stand on Zanzibar (1968)
“[When it comes to leadership] intentionality rules.”
Vanderbilt Commencement Address (2011)

1938 radio broadcast from New York City marking Abraham Lincoln's birthday, quoted in Vermont Today, Vermont's Great Moments of the 20th Century http://www.vermonttoday.com/century/topstories/gaiken.htm

“The Coming On of a New Spirit”, speech to Chicago Democrat's Iriquois Club (12 February 1912), The Politics of Woodrow Wilson, p. 180 http://books.google.com/books?id=rxC4IG60KTwC&pg=PA180&dq=%22America+was+established+not+to+create+wealth%22
Sometimes abbreviated to: “America was established not to create wealth but to realize a vision, to realize an ideal—to discover and maintain liberty among men.”
1910s
Don’t leave Syria to become a graveyard — this generation’s responsibility to the world (13 October 2015)

Nguyen Khanh stages the 1946 coup: On the 1964 South Vietnamese coup
1980s, Interview with Nguyen Khanh (1981)

Michael White, "I will go in my own time – Blair", The Guardian, 12 May 2005, p. 2.
Speech to the Parliamentary Labour Party, 11 May 2005; the 'leadership' referred to was that of his successor, who was widely assumed to be Gordon Brown.
2000s

Blue Labour, Tackling Poverty Together http://www.bluelabour.org/2013/11/24/tackling-poverty-together/

Response to question: Why would [Islamist terrorists] warp a religion to justify attacking the United States. [Hudson Institute, Reclaim American Liberty Conference, January 13, 2010, http://www.hudson.org/index.cfm?fuseaction=hudson_upcoming_events&id=741, March 22, 2011]
2010s
“The term “leadership” connotes critical experience rather than routine practice.”
Source: Leadership in Administration: A Sociological Interpretation, 1957, p. 48

“The 18 years since 1987 brought us nothing but bad leadership and bad governance.”
Address to the conference of the Fiji Labour Party, Lautoka, 31 July 2005