“Colonies are necessary to Germany. We shall get them through negotiation if possible; but if not, we shall take them.”

1961, Inaugural Address

As quoted in The New York Times (24 June 1941); also in TIME magazine (2 July 1951) http://www.time.com/time/magazine/article/0,9171,815031,00.html)
Context: If we see that Germany is winning we ought to help Russia and if Russia is winning we ought to help Germany, and that way let them kill as many as possible, although I don't want to see Hitler victorious under any circumstances. Neither of them thinks anything of their pledged word.

Speech to a joint session of the United States Congress, Washington, D.C. (26 December 1941) http://www.winstonchurchill.org/learn/speeches/speeches-of-winston-churchill/1941-1945-war-leader/288-us-congress-1941.
The Second World War (1939–1945)
Context: When we consider the resources of the United States and the British Empire compared to those of Japan, when we remember those of China, which has so long and valiantly withstood invasion and when also we observe the Russian menace which hangs over Japan, it becomes still more difficult to reconcile Japanese action with prudence or even with sanity. What kind of a people do they think we are? Is it possible they do not realise that we shall never cease to persevere against them until they have been taught a lesson which they and the world will never forget?
Members of the Senate and members of the House of Representatives, I turn for one moment more from the turmoil and convulsions of the present to the broader basis of the future. Here we are together facing a group of mighty foes who seek our ruin; here we are together defending all that to free men is dear. Twice in a single generation the catastrophe of world war has fallen upon us; twice in our lifetime has the long arm of fate reached across the ocean to bring the United States into the forefront of the battle. If we had kept together after the last War, if we had taken common measures for our safety, this renewal of the curse need never have fallen upon us.
Do we not owe it to ourselves, to our children, to mankind tormented, to make sure that these catastrophes shall not engulf us for the third time?

Extemporaneous remarks during the Meeting with the Leaders of Regions I and II, Mansion House, Baguio City (15 March 1981)
1965

At Vicksburg (11 July 1863), as quoted in Words of our Hero: Ulysses S. Grant https://archive.org/stream/wordsofourheroul00gran/wordsofourheroul00gran_djvu.txt, edited by Jeremiah Chaplin, Boston: D. Lothrop and Company, p. 13.
1860s

Source: The Red Queen (1993), Ch. 5

Speech https://api.parliament.uk/historic-hansard/commons/1982/apr/29/falkland-islands#S6CV0022P0_19820429_HOC_280 in the House of Commons (29 April 1982) on the Falklands War
1980s

White Racism and Black Consciousness
I Write What I Like (1978)

1970s, Second Inaugural Address (1973)