“Democracy is government of the strongest, just as military despotism is. This is a bond of connection between the two. They are the brutal forms of government and as strength and authority go together, necessarily arbitrarily.”

I Ain't Got Time To Bleed (1999)
Context: I view the traditional two parties as in some ways very evil. They've become monsters that are out of control. The two parties don't have in mind what's best for Minnesota. The only things that are important to them are their own agendas and their pork. Government's become just a battle of power between the two parties. But now that Minnesota has a governor who truly comes from the private sector, a lot of light's going to be shed on how the system is unfair to people outside the two parties.

Source: The House Of Commons At Work (1993), Chapter 1, The System of Government, p. 5

Letter to an autograph collector (identified: "Washington, 27th April, 1837"), published in The Historical Magazine 4:7 (July 1860), pp. 193-194 https://archive.org/stream/historicalmagaziv4morr#page/194/mode/1up; this became slightly misquoted by John Wingate Thornton in The Pulpit of The American Revolution (1860): "The highest glory of the American Revolution, said John Quincy Adams, was this: it connected, in one indissoluble bond, the principles of civil government with the principles of Christianity".

Nobel Address (1991)

Letter to August Belmont (May 30, 1868), in J. W. Schuckers, The Life and Public Services of Salmon Portland Chase, (1874). p. 585.

Speech in the House of Commons (11 November 1947), published in 206–07 The Official Report, House of Commons (5th Series), 11 November 1947, vol. 444, cc. http://hansard.millbanksystems.com/commons/1947/nov/11/parliament-bill#column_206
Post-war years (1945–1955)
Variant: Democracy is the worst form of government, except all the others that have been tried.
Context: Many forms of Government have been tried and will be tried in this world of sin and woe. No one pretends that democracy is perfect or all-wise. Indeed, it has been said that democracy is the worst form of government except all those other forms that have been tried from time to time.

1833

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.