“Deeply as many people deplored the policy which at a critical moment in European history gave Hitler a free hand in the East to develop his ambitious schemes of domination, strongly opposed as we were to many features of the Soviet system, we had no hesitation in proclaiming that as enemies of our enemies we should do all we could to help the Russian people in their fight. … It was not unlikely that Hitler hoped to be able to launch from Moscow a great peace offensive. He would like to proclaim himself the saviour of Europe from Bolshevism. … He would deceive no one in the Government. The great mass of the people in this country and in the countries of the British Commonwealth and Empire would not be deceived. We would not make peace with the Nazi gang because such a peace would be no peace. It would be a betrayal of everything for which this country stood.”

1950s, What Desires Are Politically Important? (1950)
Context: We love those who hate our enemies, and if we had no enemies there would be very few people whom we should love.
All this, however, is only true so long as we are concerned solely with attitudes towards other human beings. You might regard the soil as your enemy because it yields reluctantly a niggardly subsistence. You might regard Mother Nature in general as your enemy, and envisage human life as a struggle to get the better of Mother Nature. If men viewed life in this way, cooperation of the whole human race would become easy. And men could easily be brought to view life in this way if schools, newspapers, and politicians devoted themselves to this end. But schools are out to teach patriotism; newspapers are out to stir up excitement; and politicians are out to get re-elected. None of the three, therefore, can do anything towards saving the human race from reciprocal suicide.

To Leon Goldensohn, April 12, 1946, from "The Nuremberg Interviews" by Leon Goldensohn, Robert Gellately - History - 2004.
Sourced Encyclopedia of the Third Reich Louis L. Snyder

1990s, A Distinctly American Internationalism (November 1999)

To Otto von Bismarck in June 1878, as quoted in Around the World with General Grant http://www.granthomepage.com/grantslavery.htm (1879), by John Russell Young, The American News Company, New York, vol. 7, p. 416
1870s, Around the World with General Grant (1879)

Fánshì dírén fǎnduì de, wǒmen jiù yào yǒnghù; fánshì dírén yǒnghù de, wǒmen jiù yào fǎnduì.
If the enemy opposes, we must support it; if the enemy supports it, we must oppose it.
Chapter 2 https://www.marxists.org/reference/archive/mao/works/red-book/ch02.htm, originally published in Interview with Three Correspondents from the Central News Agency, the Sao Tang Pao and the Hsin Min Pao (September 16, 1939), Selected Works, Vol. II, p. 272.
Quotations from Chairman Mao Zedong (The Little Red Book)

"The World Domination League" (1964)
E. L. Wisty
Context: Hitler was a very peculiar person wasn't he? He was another dominator you know — Hitler. And he was a wonderful ballroom dancer. Not many people know that. … Of course Mrs Hitler was a charming woman, wasn't she? She's still alive, you know. I saw her down the Edgware Road only the other day. She'd just popped into the chemist's to buy something, and I saw her sign the cheque "Mrs Hitler" so I knew it was she. I tried to go up and talk to her, but she slipped away into the crowd. I was hoping she'd be able to come to the next meeting of the World Domination League. Not many people do.

Quoted in "The Voice of Russia" - Copyright 2005 - by Olga Troshina

Speech in the Reichstag (6 April 1916), quoted in W. M. Knight-Patterson, Germany. From Defeat to Conquest 1913-1933 (London: George Allen and Unwin, 1945), p. 75
1910s

"Saudi Arabia wasn’t always this repressive. Now it’s unbearable." in The Washington Post (18 September 2017)