“While our nation is safer than it was seven years ago, the gravest threat to our people remains another terrorist attack. Our enemies are patient and determined to strike again. America did nothing to seek or deserve this conflict. But we have been given solemn responsibilities, and we must meet them. We must resist complacency. We must keep our resolve. And we must never let down our guard. At the same time, we must continue to engage the world with confidence and clear purpose. In the face of threats from abroad, it can be tempting to seek comfort by turning inward. But we must reject isolationism and its companion, protectionism. Retreating behind our borders would only invite danger. In the 21st century, security and prosperity at home depend on the expansion of liberty abroad. If America does not lead the cause of freedom, that cause will not be led.”

Source: The Christian Agnostic (1965), p.119

2000s, 2001, Freedom and Democracy Are Under Attack (September 2001)

2014, Address to European Youth (March 2014)
Context: In the end, the success of our ideals comes down to us -- including the example of our own lives, our own societies. We know that there will always be intolerance. But instead of fearing the immigrant, we can welcome him. We can insist on policies that benefit the many, not just the few; that an age of globalization and dizzying change opens the door of opportunity to the marginalized, and not just a privileged few. Instead of targeting our gay and lesbian brothers and sisters, we can use our laws to protect their rights. Instead of defining ourselves in opposition to others, we can affirm the aspirations that we hold in common. That’s what will make America strong. That’s what will make Europe strong. That’s what makes us who we are. And just as we meet our responsibilities as individuals, we must be prepared to meet them as nations. Because we live in a world in which our ideals are going to be challenged again and again by forces that would drag us back into conflict or corruption. We can’t count on others to rise to meet those tests.

Remarks made at the meeting of the German warlords at Advanced General Headquarters at Avesnes (11 August 1918), quoted in John Terraine, To Win A War: 1918 The Year of Victory (London: Cassell, 2003), p. 121
1910s

Presidential campaign (April 12, 2015 – 2016), Speech about the Orlando Shooting (June 13, 2016)

2009, A New Beginning (June 2009)

Source: Tiger Eyes

2000s, 2002, State of the Union address (January 2002)

Freedom vs. Security: A False Choice
2004-05-31
http://www.house.gov/paul/tst/tst2004/tst053104.htm
2000s, 2001-2005