“Honor, justice and humanity call upon us to hold and to transmit to our posterity, that liberty, which we received from our ancestors. It is not our duty to leave wealth to our children; but it is our duty to leave liberty to them. No infamy, iniquity, or cruelty can exceed our own if we, born and educated in a country of freedom, entitled to its blessings and knowing their value, pusillanimously deserting the post assigned us by Divine Providence, surrender succeeding generations to a condition of wretchedness from which no human efforts, in all probability, will be sufficient to extricate them; the experience of all states mournfully demonstrating to us that when arbitrary power has been established over them, even the wisest and bravest nations that ever flourished have, in a few years, degenerated into abject and wretched vassals.”

From Declaration of the Causes and Necessity of Taking Up Arms https://en.wikisource.org/wiki/Declaration_of_the_Causes_and_Necessity_of_Taking_Up_Arms, adopted by the Second Continental Congress (1775)

Essay, written under the pseudonym "Candidus," in The Boston Gazette (14 October 1771), later published in The Life and Public Services of Samuel Adams (1865) by William Vincent Wells, p. 425
Context: The liberties of our Country, the freedom of our civil constitution are worth defending at all hazards: And it is our duty to defend them against all attacks. We have receiv'd them as a fair Inheritance from our worthy Ancestors: They purchas'd them for us with toil and danger and expence of treasure and blood; and transmitted them to us with care and diligence. It will bring an everlasting mark of infamy on the present generation, enlightened as it is, if we should suffer them to be wrested from us by violence without a struggle; or be cheated out of them by the artifices of false and designing men. Of the latter we are in most danger at present: Let us therefore be aware of it. Let us contemplate our forefathers and posterity; and resolve to maintain the rights bequeath'd to us from the former, for the sake of the latter. — Instead of sitting down satisfied with the efforts we have already made, which is the wish of our enemies, the necessity of the times, more than ever, calls for our utmost circumspection, deliberation, fortitude, and perseverance. Let us remember that "if we suffer tamely a lawless attack upon our liberty, we encourage it, and involve others in our doom." It is a very serious consideration, which should deeply impress our minds, that millions yet unborn may be the miserable sharers of the event.

1830s, The Lyceum Address (1838)
Context: We find ourselves under the government of a system of political institutions, conducing more essentially to the ends of civil and religious liberty, than any of which the history of former times tells us. We, when mounting the stage of existence, found ourselves the legal inheritors of these fundamental blessings. We toiled not in the acquirement or establishment of them; they are a legacy bequeathed us by a once hardy, brave, and patriotic, but now lamented and departed, race of ancestors. Theirs was the task (and nobly they performed it) to possess themselves, and through themselves us, of this goodly land, and to uprear upon its hills and its valleys a political edifice of liberty and equal rights; 'tis ours only to transmit these — the former unprofaned by the foot of an invader, the latter undecayed by the lapse of time and untorn by usurpation — to the latest generation that fate shall permit the world to know. This task gratitude to our fathers, justice to ourselves, duty to posterity, and love for our species in general, all imperatively require us faithfully to perform.

2000s, 2003, Address to the National Endowment for Democracy (November 2003)

"On Syria (And All Else), It's 'Us' Against 'Them'" http://www.economicpolicyjournal.com/2013/09/on-syria-and-all-else-its-us-against.html Economic Policy Journal, September 7, 2013.
2010s, 2013

Letter to his daughter Sarah Mason McCarty after the death of an infant daughter (10 February 1785), published in The Life of George Mason, 1725-1792 Vol. 2 (1892) by Kate Mason Rowland, p. 74

In: Philosophy & Social Action (2003)

Remarks in the Senate, June 29, 1961, Congressional Record, vol. 107, p. 11703.

Reported in Josiah Hotchkiss Gilbert, Dictionary of Burning Words of Brilliant Writers (1895), p. 51.