“Though some of them would disdain to say that there are net benefits in small acts of destruction, they see almost endless benefits in enormous acts of destruction. They tell us how much better off economically we all are in war than in peace. They see “miracles of production” which it requires a war to achieve. And they see a postwar world made certainly prosperous by an enormous “accumulated” or “backed up” demand. In Europe they joyously count the houses, the whole cities that have been leveled to the ground and that “will have to be replaced.” In America they count the houses that could not be built during the war, the nylon stockings that could not be supplied, the worn-out automobiles and tires, the obsolescent radios and refrigerators. They bring together formidable totals.It is merely our old friend, the broken-window fallacy, in new clothing, and grown fat beyond recognition. This time it is supported by a whole bundle of related fallacies. It confuses need with demand.”
Economics in One Lesson (1946), The Blessings of Destruction (ch. 3)
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Henry Hazlitt 16
American journalist 1894–1993Related quotes

Interview at Big Sur, California http://www.achievement.org/autodoc/printmember/pau0int-1 (11 November 1990).
1990s
Context: I realized that more and more I was saying, "It seems to me that we have come to the time war ought to be given up. It no longer makes sense to kill 20 million or 40 million people because of a dispute between two nations who are running things, or decisions made by the people who really are running things. It no longer makes sense. Nobody wins. Nobody benefits from destructive war of this sort and there is all of this human suffering." And Einstein was saying the same thing of course. So that is when we decided — my wife and I — that first, I was pretty effective as a speaker. Second, I better start boning up, studying these other fields so that nobody could stand up and say, "Well, the authorities say such and such "

Source: "As I Please," Tribune (4 August 1944)
http://alexpeak.com/twr/orwell/quotes/

Letter to Cobden (24 December 1853), quoted in G. M. Trevelyan, The Life of John Bright (London: Constable, 1913), pp. 229-230.
1850s

I Ask You—What Price Freedom? Answers, 24 October 1936.
Reproduced in The Collected Essays of Sir Winston Churchill, Vol I, Churchill at War, Centenary Edition (1976), Library of Imperial History, p. 364. ISBN 0903988429
The 1930s

Conclusion
1880s, Personal Memoirs of General U. S. Grant (1885)

"To the Indianapolis Clergy." The Iconoclast (Indianapolis, IN) (1883)

1980s, GNU Manifesto (1985)