“Just as we respect the right of each nation to determine its own future, we also recognize the responsibility of each nation to secure its own future.
Just as America's role is indispensable in preserving the world's peace, so is each nation's role indispensable in preserving its own peace.
Together with the rest of the world, let us resolve to move forward from the beginnings we have made. Let us continue to bring down the walls of hostility which have divided the world for too long, and to build in their place bridges of understanding — so that despite profound differences between systems of government, the people of the world can be friends.”

Conservative Home interview (2013)

Welcoming ceremony for Nicolae Ceauşescu of Romania (12 April 1978), Public Papers of the Presidents of the United States, Jimmy Carter, 1978 Book 1: January 1 to June 30, 1978, p. 735
Presidency (1977–1981), 1978

Speech to the Labour Party Conference in Caxton Hall, London (12 December 1944), quoted in The Times (13 December 1944), p. 2.
War Cabinet

1970s, Second Inaugural Address (1973)

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.

Source: Banal Nationalism (1995), p. 85

Barack Obama: "Address to the Ghanaian Parliament in Accra, Ghana," July 11, 2009. Online by Gerhard Peters and John T. Woolley, The American Presidency Project. http://www.presidency.ucsb.edu/ws/index.php?pid=86395&st=&st1=
2009
Context: Now, make no mistake: History is on the side of these brave Africans, not with those who use coups or change constitutions to stay in power. Africa doesn't need strongmen; it needs strong institutions. Now, America will not seek to impose any system of government on any other nation. The essential truth of democracy is that each nation determines its own destiny.

1970s, Second Inaugural Address (1973)

Speech at the 52nd session of the United Nations General Assembly (excerpts) (1997)