1960s, Farewell address (1961)
Context: We now stand ten years past the midpoint of a century that has witnessed four major wars among great nations. Three of these involved our own country. Despite these holocausts, America is today the strongest, the most influential, and most productive nation in the world. Understandably proud of this pre-eminence, we yet realize that America's leadership and prestige depend, not merely upon our unmatched material progress, riches and military strength, but on how we use our power in the interests of world peace and human betterment.
1960, Speech at East Los Angeles College Stadium, Los Angeles, California
A Path to Freedom (2010), p. 64
Source: 1962, Address and Question and Answer Period at the Economic Club of New York
Introduction, p. xxv
The Age of Fallibility (2006)
Context: We must recognize that as the dominant power in the world we have a special responsibility. In addition to protecting our national interests, we must take the leadership in protecting the common interests of humanity. I go into some detail as to what that entails.
Mankind’s power over nature has increased cumulatively while its ability to govern itself has not kept pace. There is no other country that can take the place of the United States in the foreseeable future. If the United States fails to provide the right kind of leadership our civilization may destroy itself. That is the unpleasant reality that confronts us.
2014, Sixth State of the Union Address (January 2014)
Context: For while our relationship with Afghanistan will change, one thing will not: our resolve that terrorists do not launch attacks against our country. [... ] We have to remain vigilant. But I strongly believe our leadership and our security cannot depend on our outstanding military alone. As commander in chief, I have used force when needed to protect the American people, and I will never hesitate to do so as long as I hold this office. But I will not send our troops into harm's way unless it is truly necessary, nor will I allow our sons and daughters to be mired in open-ended conflicts. We must fight the battles that need to be fought, not those that terrorists prefer from us -- large-scale deployments that drain our strength and may ultimately feed extremism. So even as we actively and aggressively pursue terrorist networks, through more targeted efforts and by building the capacity of our foreign partners, America must move off a permanent war footing. That's why I've imposed prudent limits on the use of drones, for we will not be safer if people abroad believe we strike within their countries without regard for the consequence.
May 27, 2004 http://www.nytimes.com/2004/05/27/politics/campaign/27CND-KERR.html?ex=1089864000&en=d7e191761ad35943&ei=5070&hp
1920s, Toleration and Liberalism (1925)
1865, quoted on page 394 of Canadian Constitutional Development: Shown by Selected Speeches and Dispatches, with Introductions and Explanatory Notes https://books.google.ca/books?id=LRukOUFKGnkC&pg=PA394 published 1907
Dated
2000s, 2001, First inaugural address (January 2001)
Context: Together, we will reclaim America’s schools, before ignorance and apathy claim more young lives. We will reform Social Security and Medicare, sparing our children from struggles we have the power to prevent. And we will reduce taxes, to recover the momentum of our economy and reward the effort and enterprise of working Americans. We will build our defenses beyond challenge, lest weakness invite challenge. We will confront weapons of mass destruction, so that a new century is spared new horrors. The enemies of liberty and our country should make no mistake: America remains engaged in the world by history and by choice, shaping a balance of power that favors freedom. We will defend our allies and our interests. We will show purpose without arrogance. We will meet aggression and bad faith with resolve and strength. And to all nations, we will speak for the values that gave our nation birth.
