“I believe, and always have, that America must engage — not retreat — in the world.”

2000s, 2006, State of the Union (January 2006)
Context: But our enemies and our friends can be certain. The United States will not retreat from the world, and we will never surrender to evil. America rejects the false comfort of isolationism. We are the nation that saved liberty in Europe, and liberated death camps, and helped raise up democracies, and faced down an evil empire. Once again, we accept the call of history to deliver the oppressed, and move this world toward peace. We remain on the offensive against terror networks. We have killed or captured many of their leaders — and for the others, their day will come.

"We’ve Cheated the Parson" (song), Polly: an Opera (1729), Air 46, Act II, sc. x

Quoted in "Europe in Our Time, 1914 to the Present" - Page 571 - by Robert Reinhold Ergang - Europe - 1953

1960, Address at Convention Hall, Philadelphia
Context: In short, I believe in an America that is on the march — an America respected by all nations, friends and foes alike — an America that is moving, doing, working, trying — a strong America in a world of peace. That peace must be based on world law and world order, on the mutual respect of all nations for the rights and powers of others and on a world economy in which no nation lacks the ability to provide a decent standard of living for all of its people. But we cannot have such a world, and we cannot have such a peace, unless the United States has the vitality and the inspiration and the strength. If we continue to stand still, if we continue to lie at anchor, if we continue to sit on dead center, if we content ourselves with the easy life and the rosy assurances, then the gates will soon be open to a lean and hungry enemy.

May 27, 2004 http://www.nytimes.com/2004/05/27/politics/campaign/27CND-KERR.html?ex=1089864000&en=d7e191761ad35943&ei=5070&hp

2012 stump speech, quoted in [2012-1-22, Steyn, Mark, The Man Who Gave Us Newt, National Review, http://www.nationalreview.com/corner/288873/man-who-gave-us-newt-mark-steyn, 2012-02-02]
2012

in 'Alfred Stieglitz' Photo notes, August 1946, p. 65
From Adams to Stieglitz' (1990)

Appendix A
1910s, Theodore Roosevelt — An Autobiography (1913)

1960, Address at Convention Hall, Philadelphia
Context: I believe in an America where the rights that I have described are enjoyed by all, regardless of their race or their creed or their national origin — where every citizen is free to think and speak as he pleases and write and worship as he pleases — and where every citizen is free to vote as he pleases, without instructions from anyone, his employer, the union leader or his clergyman.