“The only sane policy for the world is that of abolishing war.”

Fact and Fiction (1961), Part IV, Ch. 10: "Can War Be Abolished?", p. 276
1960s

Ran (1985)
Variant: In a mad world, only the mad are sane.

"Robert Anton Wilson: Searching For Cosmic Intelligence" - interview with Jeffrey Elliot (1980) http://www.rawilsonfans.com/articles/Starship.htm
Context: The Western World has been brainwashed by Aristotle for the last 2,500 years. The unconscious, not quite articulate, belief of most Occidentals is that there is one map which adequately represents reality. By sheer good luck, every Occidental thinks he or she has the map that fits. Guerrilla ontology, to me, involves shaking up that certainty. I use what in modern physics is called the "multi-model" approach, which is the idea that there is more than one model to cover a given set of facts. As I've said, novel writing involves learning to think like other people. My novels are written so as to force the reader to see things through different reality grids rather than through a single grid. It's important to abolish the unconscious dogmatism that makes people think their way of looking at reality is the only sane way of viewing the world. My goal is to try to get people into a state of generalized agnosticism, not agnosticism about God alone, but agnosticism about everything. If one can only see things according to one's own belief system, one is destined to become virtually deaf, dumb, and blind. It's only possible to see people when one is able to see the world as others see it. That's what guerrilla ontology is — breaking down this one-model view and giving people a multi-model perspective.

2000s, Kingdom of Fear: Loathsome Secrets of a Star-crossed Child in the Final Days of the American Century (2004)

Nya Samhället (3 November 1913)
Sourced quotes

A Great Experiment (1941), p. 189
Context: The truth is, I was never a very good Party man. Probably but for the War of 1914, I should have gone on fairly comfortably as a Conservative official. But those four years burnt into me the insufferable conditions of international relations which made war the acknowledged method — indeed, the only fully authorized method — of settling international disputes. Thenceforth, the effort to abolish war seemed to me, and still seems to me, the only political object worth while.

Address to the Senate (22 January 1917)
1910s
Context: The question upon which the whole future peace and policy of the world depends is this: Is the present war a struggle for a just and secure peace, or only for a new balance of power? If it be only a struggle for a new balance of power, who will guarantee, who can guarantee, the stable equilibrium of the new arrangement? Only a tranquil Europe can be a stable Europe. There must be, not a balance of power, but a community of power; not organized rivalries, but an organized common peace.

In response to journalist for his views on the future of mankind at his 70th birthday (16 April 1959)

"On the Roof of the World", Liberty Bell magazine (December 1987)
1970s, 1980s