“To put the point another way, the republican sees liberty as internally connected to self-government and the civic virtues that sustain it.”

26 June 1787 per page 105 of "The Debates, Resolutions, and Other Proceedings, in Convention, on the Adoption of the Federal Constitution: Supplementary to the state Conventions" by Johnathan Elliot, published 1830 https://books.google.ca/books?id=-gtAAAAAYAAJ&pg=RA1-PA105
Debates of the Federal Convention (1787)

1850s, Speech at Peoria, Illinois (1854)
Context: "Fools rush in where angels fear to tread." At the hazard of being thought one of the fools of this quotation, I meet that argument — I rush in — I take that bull by the horns. I trust I understand and truly estimate the right of self-government. My faith in the proposition that each man should do precisely as he pleases with all which is exclusively his own lies at the foundation of the sense of justice there is in me. I extend the principle to communities of men as well as to individuals. I so extend it because it is politically wise, as well as naturally just: politically wise in saving us from broils about matters which do not concern us. Here, or at Washington, I would not trouble myself with the oyster laws of Virginia, or the cranberry laws of Indiana. The doctrine of self-government is right, — absolutely and eternally right, — but it has no just application as here attempted. Or perhaps I should rather say that whether it has such application depends upon whether a negro is not or is a man. If he is not a man, in that case he who is a man may as a matter of self-government do just what he pleases with him.
But if the negro is a man, is it not to that extent a total destruction of self-government to say that he too shall not govern himself. When the white man governs himself, that is self-government; but when he governs himself and also governs another man, that is more than self-government — that is despotism. If the negro is a man, why then my ancient faith teaches me that "all men are created equal," and that there can be no moral right in connection with one man's making a slave of another.

1790s, Farewell Address (1796)
Source: George Washington's Farewell Address
Context: Hence, likewise, they will avoid the necessity of those overgrown military establishments, which, under any form of government, are inauspicious to liberty, and which are to be regarded as particularly hostile to Republican Liberty.
Context: While, then, every part of our country thus feels an immediate and particular interest in Union, all the parts combined cannot fail to find in the united mass of means and efforts greater strength, greater resource, proportionably greater security from external danger, a less frequent interruption of their peace by foreign nations; and, what is of inestimable value, they must derive from Union an exemption from those broils and wars between themselves, which so frequently afflict neighbouring countries not tied together by the same governments, which their own rivalships alone would be sufficient to produce, but which opposite foreign alliances, attachments, and intrigues would stimulate and embitter. Hence, likewise, they will avoid the necessity of those overgrown military establishments, which, under any form of government, are inauspicious to liberty, and which are to be regarded as particularly hostile to Republican Liberty. In this sense it is, that your Union ought to be considered as a main prop of your liberty, and that the love of the one ought to endear to you the preservation of the other.

The Rise of the Dutch Republic (1856; New York: Harper, 1861) vol. 3, part 6, ch. 1, p. 416.

Pj Kwong, CBC Sports, in "There will never be another Virtue and Moir" http://www.cbc.ca/sports/olympics/figureskating/there-will-never-be-another-virtue-and-moir-1.4542769 (21 February 2018)

Pj Kwong, CBC Sports, in "There will never be another Virtue and Moir" http://www.cbc.ca/sports/olympics/figureskating/there-will-never-be-another-virtue-and-moir-1.4542769 (21 February 2018)

Iowa straw poll speech, August 14, 1999. http://renewamerica.us/archives/speeches/99_08_14strawpoll.htm.
1999

1960s, Inaugural address (1965)
Context: Liberty was the second article of our covenant. It was self-government. It was our Bill of Rights. But it was more. America would be a place where each man could be proud to be himself: stretching his talents, rejoicing in his work, important in the life of his neighbors and his nation. This has become more difficult in a world where change and growth seem to tower beyond the control and even the judgment of men. We must work to provide the knowledge and the surroundings which can enlarge the possibilities of every citizen. The American covenant called on us to help show the way for the liberation of man. And that is today our goal. Thus, if as a nation there is much outside our control, as a people no stranger is outside our hope.