“Fighting battles is like courting girls: those who make the most pretensions and are boldest usually win.”

Free the Airwaves! (2002)
Context: The battle for the airwaves cannot be limited to only those who have the bank accounts to pay for the battle and win it. Democracy is in danger. Seats in Congress, seats in the state legislature, that big seat in the White House itself, can be purchased by those who have the greatest campaign resources, who have the largest bank accounts or own riches.
That, I submit to you, is no democracy. It is an oligarchy of the already powerful. It is no less than a conspiracy of the powerful to deny access to government to those who literally cannot afford to run for public office with any realistic hope of getting elected.

Source: The Art of War, Chapter I · Detail Assessment and Planning

This is cited to to Rommel‎'s Infanterie Greift An [Infantry Attacks] (1937) in World War II : The Definitive Visual History (2009) by Richard Holmes, p. 128, and Timelines of History (2011) by DK Publishing, p. 392, but to George S. Patton, in Patton's Principles : A Handbook for Managers Who Mean It! (1982) by Porter B. Williamson as well as Leadership (1990) by William Safire and Leonard Safir, p. 47
Disputed
Source: Rommel: In His Own Words

This is cited to Patton in Patton's Principles : A Handbook for Managers Who Mean It! (1982) by Porter B. Williamson as well as Leadership (1990) by William Safire and Leonard Safir, p. 47, but is also cited to Erwin Rommel‎ from his Infanterie Greift An [Infantry Attacks] (1937) in World War II : The Definitive Visual History (2009) by Richard Holmes, p. 128, and Timelines of History (2011) by DK Publishing, p. 392
Disputed

This quote is widely attributed to Margaret Thatcher on various websites, and also appears in a number of books, including The Concise Columbia Dictionary of Quotations, Columbia University Press (1989), ed. Robert Andrews, p. 320 : ISBN 0231069901. 9780231069908 , but without any further source information such as date, location or any other context.
One valid Thatcher quote which may be the basis for the version above appears in the Second Carlton Lecture http://www.margaretthatcher.org/document/105799 (‘Why Democracy Will Last’), delivered at the Carlton Club, London (November 26, 1984) : Mr. Chairman, each generation has to stand up for democracy. It can’t take anything for granted and may have to fight fundamental battles anew. You know that marvellous quotation from Goethe : ‘That which thy fathers bequeathed thee / Earn it anew if thou would possess it.’
Thatcher also expressed this thought in a Speech to Atlantic Bridge (May 14, 2003) http://www.margaretthatcher.org/document/111266, delivered at the St. Regis Hotel, New York City : My friends, every generation has to fight anew the battle for liberty.
Disputed

"Mean People Fail", November 2014

As quoted by Robert C. Martin in Software Development magazine (September 2005), p. 60

Talking about Busted Flush the Wild Cards novel, Interview on Pat's Fantasy Hotlist http://fantasyhotlist.blogspot.com/2008/12/interview-with-george-r-r-martin-and.html (December 2008)
Context: With great power comes great responsibility, Stan Lee once wrote. Spidey's credo articulates the basic premise of every superhero universe, including ours. But Lord Acton wrote that power corrupts, and absolute power corrupts absolutely. The tension between those two truths is where the drama comes in. My own heroes are the dreamers, those men and women who tried to make the world a better place than when they found it, whether in small ways or great ones. Some succeeded, some failed, most had mixed results... but it is the effort that's heroic, as I see it. Win or lose, I admire those who fight the good fight.