“I don't think I am ghoulish in saying that I would like them, and every morally responsible citizen of the world, particularly my fellow Australians of the World War II period, to refresh their memories by referring regularly to the photographic record of the Hiroshima-Nagasaki happening — the rags of human flesh, the suppurating sores, the despair of families blown apart, the disturbed minds, the bleak black gritty plains where the homes of human beings like you and I once stood. Most of all, I would like every Australian couple born since Hiroshima and Nagasaki were blasted out of existence to consult these photographic records and for ever after do all in their power to prevent the children they are creating from suffering a fate similar to that thrust upon the children of those two Japanese cities. Let us rouse ourselves and realise this is what we shall have to face.”

Source: The History of Love

As translated in The Zen Poetry of Dōgen : Verses from the Mountain of Eternal Peace (1997) by Steven Heine, p. 61

Introduction to "National Brotherhood Week"
That Was the Year That Was (1965)

As quoted in Benjamin Franklin: An Exploration of a Life of Science and Service (1938) by Carl Van Doren,<!-- New York: The Viking Press --> p. 777.
Variation: "The moral and religious system which Jesus Christ transmitted to us is the best the world has ever seen, or can see.", as quoted in John Wallis (1856), The British Millennial Harbinger https://books.google.es/books?id=jfgDAAAAQAAJ&pg=PA428&dq=franklin, p. 428.
Context: As to Jesus of Nazareth, my Opinion of whom you particularly desire, I think the System of Morals and his Religion, as he left them to us, the best the world ever saw or is likely to see; but I apprehend it has received various corrupt changes, and I have, with most of the present Dissenters in England, some Doubts as to his divinity; tho' it is a question I do not dogmatize upon, having never studied it, and I think it needless to busy myself with it now, when I expect soon an Opportunity of knowing the Truth with less Trouble.

Interview with Pierre Salinger, June 22, 1982

Edward Snowden: 'The US government will say I aided our enemies' – video interview http://www.guardian.co.uk/world/video/2013/jul/08/edward-snowden-video-interview, published by The Guardian on 8 July 2013.
Interview with Glenn Greenwald, 6 June 2013, Part 2

Nobel lecture (2005)
Context: Imagine what would happen if the nations of the world spent as much on development as on building the machines of war. Imagine a world where every human being would live in freedom and dignity. Imagine a world in which we would shed the same tears when a child dies in Darfur or Vancouver. Imagine a world where we would settle our differences through diplomacy and dialogue and not through bombs or bullets. Imagine if the only nuclear weapons remaining were the relics in our museums. Imagine the legacy we could leave to our children.
Imagine that such a world is within our grasp.

Fiction, The Call of Cthulhu (1926)
Context: The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents. We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far. The sciences, each straining in its own direction, have hitherto harmed us little; but some day the piecing together of dissociated knowledge will open up such terrifying vistas of reality, and of our frightful position therein, that we shall either go mad from the revelation or flee from the light into the peace and safety of a new dark age.

Something Like an Autobiography (1981)