“That the people of America should be severed from Great Britain, even your fellow Congressionalists from the North would not be hardy enough yet to avow; but that this will certainly follow from the measures you have been induced by them to adopt, is obvious to every man who is permitted yet to think for himself. … see ye not that after some few years of civil broils all the fair settlements in the middle and southern colonies will be seized on by our more enterprising and restless fellow-colonists of the North? At first and for a while perhaps they may be contented to be the Dutch of America, i. e. to be our carriers and fishmongers, for which no doubt, as their sensible historian [Edmund Burke] has observed, they seem to be destined by their situation, soil, and climate: but had so sagacious an observer foreseen that a time might come when all North America should be independent, he would, it is probable, have added to his other remark, that those his Northern brethren would then become also the Goths and Vandals of America.”

"What We Want," http://www.nybooks.com/articles/1966/09/22/what-we-want/ New York Review of Books, Septmber 22, 1966

1920s, Speech on the Anniversary of the Declaration of Independence (1926)

1865, quoted on page 394 of Canadian Constitutional Development: Shown by Selected Speeches and Dispatches, with Introductions and Explanatory Notes https://books.google.ca/books?id=LRukOUFKGnkC&pg=PA394 published 1907
Dated

Speech to the Burnley chamber of commerce (19 May 1903) in the aftermath of Joseph Chamberlain's speech advocating Imperial Preference tariffs on imports, as reported in The Times (20 May 1903), p. 12. The Times reported Rosebery's speech in third person.

If coming generations are to maintain a like spirit, it will be because they continue to support the principles which these men represented. It is for that purpose that we erect memorials. We can not hold our admiration for the historic figures which we shall see here without growing stronger in our determination to perpetuate the institutions which their lives revealed and established.
1920s, Address at the Black Hills (1927)

Source: Speech http://hansard.millbanksystems.com/commons/1863/feb/05/address-to-her-majesty-on-the-lords in the House of Commons (5 February 1863).

The Issue (1908)
Context: If it had not been for the discontent of a few fellows who had not been satisfied with their conditions, you would still be living in caves. Intelligent discontent is the mainspring of civilization.
Progress is born of agitation. It is agitation or stagnation.

"A View of the Causes and Consequences of the American Revolution" (London, Robinson, 1797)

2011, Address on interventions in Libya (March 2011)
Context: Much of the debate in Washington has put forward a false choice when it comes to Libya. On the one hand, some question why America should intervene at all — even in limited ways — in this distant land. They argue that there are many places in the world where innocent civilians face brutal violence at the hands of their government, and America should not be expected to police the world, particularly when we have so many pressing needs here at home.
It’s true that America cannot use our military wherever repression occurs. And given the costs and risks of intervention, we must always measure our interests against the need for action. But that cannot be an argument for never acting on behalf of what’s right. In this particular country — Libya — at this particular moment, we were faced with the prospect of violence on a horrific scale. We had a unique ability to stop that violence: an international mandate for action, a broad coalition prepared to join us, the support of Arab countries, and a plea for help from the Libyan people themselves. We also had the ability to stop Qaddafi’s forces in their tracks without putting American troops on the ground.
To brush aside America’s responsibility as a leader and — more profoundly — our responsibilities to our fellow human beings under such circumstances would have been a betrayal of who we are. Some nations may be able to turn a blind eye to atrocities in other countries. The United States of America is different. And as President, I refused to wait for the images of slaughter and mass graves before taking action.