“If history is to teach us anything, it must teach us that there is a continuity which binds together the present and the past, the East and the West. And no branch of history teaches that lesson more powerfully than the history of language and the history of religion.”

Source: " A Case of Voluntary Ignorance http://www.christiebooks.com/ChristieBooksWP/2013/11/a-case-of-voluntary-ignorance-by-aldous-huxley/" in Collected Essays (1959)

The Disuniting of America: Reflections on a Multicultural Society (New York: W W Norton, 1998) p. 104

Speech to the House of Commons (8 June 1982) http://www.reagan.utexas.edu/archives/speeches/1982/60882a.htm
1980s, First term of office (1981–1985)
Context: From Stettin on the Baltic to Varna on the Black Sea, the regimes planted by totalitarianism have had more than thirty years to establish their legitimacy. But none — not one regime — has yet been able to risk free elections. Regimes planted by bayonets do not take root.... If history teaches anything, it teaches self-delusion in the face of unpleasant facts is folly.... Our military strength is a prerequisite to peace, but let it be clear we maintain this strength in the hope it will never be used, for the ultimate determinant in the struggle that's now going on in the world will not be bombs and rockets but a test of wills and ideas, a trial of spiritual resolve, the values we hold, the beliefs we cherish, the ideals to which we are dedicated.

In the Shadow of History, Chapter: Why should we study History? p. 4
History, What History Tells Us, In the Shadow of History

Introduction, as translated by H. B. Nisbet (1975)
Variant translation: What experience and history teach is this — that people and governments never have learned anything from history, or acted on principles deduced from it.
Pragmatical (didactic) reflections, though in their nature decidedly abstract, are truly and indefeasibly of the Present, and quicken the annals of the dead Past with the life of to-day. Whether, indeed, such reflections are truly interesting and enlivening, depends on the writer's own spirit. Moral reflections must here be specially noticed, the moral teaching expected from history; which latter has not unfrequently been treated with a direct view to the former. It may be allowed that examples of virtue elevate the soul, and are applicable in the moral instruction of children for impressing excellence upon their minds. But the destinies of peoples and states, their interests, relations, and the complicated tissue of their affairs, present quite another field. Rulers, Statesmen, Nations, are wont to be emphatically commended to the teaching which experience offers in history. But what experience and history teach is this, that peoples and governments never have learned anything from history, or acted on principles deduced from it. Each period is involved in such peculiar circumstances, exhibits a condition of things so strictly idiosyncratic, that its conduct must be regulated by considerations connected with itself, and itself alone. Amid the pressure of great events, a general principle gives no help. It is useless to revert to similar circumstances in the Past. The pallid shades of memory struggle in vain with the life and freedom of the Present.
Lectures on the History of History Vol 1 p. 6 John Sibree translation (1857), 1914
Lectures on the Philosophy of History (1832), Volume 1

2013, "Let Freedom Ring" Ceremony (August 2013)
Context: The March on Washington teaches us that we are not trapped by the mistakes of history; that we are masters of our fate. But it also teaches us that the promise of this nation will only be kept when we work together. We’ll have to reignite the embers of empathy and fellow feeling, the coalition of conscience that found expression in this place 50 years ago. And I believe that spirit is there, that truth force inside each of us. I see it when a white mother recognizes her own daughter in the face of a poor black child. I see it when the black youth thinks of his own grandfather in the dignified steps of an elderly white man. It’s there when the native-born recognizing that striving spirit of the new immigrant; when the interracial couple connects the pain of a gay couple who are discriminated against and understands it as their own. That’s where courage comes from -- when we turn not from each other, or on each other, but towards one another, and we find that we do not walk alone. That’s where courage comes from.

On her worldly view of poetry in “Poet Lucille Clifton: 'Everything Is Connected'” https://www.npr.org/templates/story/story.php?storyId=124113507 in NPR (2010 Feb 28)

Letter from Prison (21 June 1919), translated by Hamish Henderson, Edinburgh University Student Publications.