“When will the interests of governments be amalgamated with those of the people? Never!”

Alleged source is unkown. There are very few references to this quote in the internet, but early quotes can be found on twitter Tweet from 2010 https://twitter.com/karow55/status/24586690041. Brazillian writer Rodrigo Constantino cited it in the book "Prisioneiros da liberdade‎", page 157, without giving any further references. It may very well be a misquote from Plato's Republic Book 1, 347-C: "Good men are unwilling to rule, either for money's sake or for honour.... So they must be forced to consent under threat of penalty.... The heaviest penalty for declining to rule is to be ruled by someone inferior to yourself."
Disputed

Speech to the U.S. Senate (15 February 1833)
1830s

Christianity and Patriotism (1895), as translated in The Novels and Other Works of Lyof N. Tolstoï, Vol. 20, p. 44
Context: In all history there is no war which was not hatched by the governments, the governments alone, independent of the interests of the people, to whom war is always pernicious even when successful.
The government assures the people that they are in danger from the invasion of another nation, or from foes in their midst, and that the only way to escape this danger is by the slavish obedience of the people to their government. This fact is seen most prominently during revolutions and dictatorships, but it exists always and everywhere that the power of the government exists. Every government explains its existence, and justifies its deeds of violence, by the argument that if it did not exist the condition of things would be very much worse. After assuring the people of its danger the government subordinates it to control, and when in this condition compels it to attack some other nation. And thus the assurance of the government is corroborated in the eyes of the people, as to the danger of attack from other nations.

1910s, The New Nationalism (1910)
Context: I do not ask for overcentralization; but I do ask that we work in a spirit of broad and far-reaching nationalism when we work for what concerns our people as a whole. We are all Americans. Our common interests are as broad as the continent. I speak to you here in Kansas exactly as I would speak in New York or Georgia, for the most vital problems are those which affect us all alike. The national government belongs to the whole American people, and where the whole American people are interested, that interest can be guarded effectively only by the national government. The betterment which we seek must be accomplished, I believe, mainly through the national government.

Source: On Representative Government (1861), Ch. II: The Criterion of a Good Form of Government (p. 167)

Keynote address at the "One Planet, One Net" symposium sponsored by Computer Professionals for Social Responsibility (10 October 1998)

As quoted in The Best Liberal Quotes Ever : Why the Left is Right (2004) by William P. Martin. Though widely attributed to Henry, this statement has not been sourced to any document before the 1990s and appears to be at odds with his beliefs as a strong opponent of the adoption of the US Constitution.
Misattributed

Source: The Souls of Black Folk