“[Footnote] Carthage was governed by its rich men and was therefore a plutocracy. Rome was also governed by its rich men and was therefore a republic.”

De concordantia catholica (The Catholic Concordance) (1434)
Context: Therefore since all men are free by nature, every government that restrains its subjects from evils and uses the fear of punishment to orient their freedom towards the good, whether it consists of written laws or of a living law in the person of the prince, is constituted only by the agreement and consent of the subjects. For if by nature men are equally powerful and equally free, then the true and well-ordered authority of one who is a fellow and equal in power can only be established by the choice and consent of others, just as laws are established by consent

Political, Moral, and Miscellaneous Reflections (1750), Miscellaneous Thoughts and Reflections

Christmas 1793 speech http://www.lrb.co.uk/v33/n22/hugh-roberts/who-said-gaddafi-had-to-go

"Tribute to Country Lawyers: A Review", 30 A.B.A Journal 139 (1944)

Source: The Political Doctrine of Fascism (1925), p. 114

Attributed in Shadow Kings (2005) by Mark Hill, p. 91; This and similar remarks are presented on the internet and elsewhere as an expression of regret for creating the Federal Reserve. The quotation appears to be fabricated from out-of-context remarks Wilson made on separate occasions:

I have ruined my country.

Attributed by Curtis Dall in FDR: My Exploited Father-in-Law, regarding Wilson's break with Edward M. House: "Wilson … evidenced similar remorse as he approached his end. Finally he said, 'I am a most unhappy man. Unwittingly I have ruined my country.'"

A great industrial nation is controlled by its system of credit.…

"Monopoly, Or Opportunity?" (1912), criticizing the credit situation before the Federal Reserve was created, in The New Freedom (1913), p. 185

We have come to be one of the worst ruled… Governments….

"Benevolence, Or Justice?" (1912), also in The New Freedom (1913), p. 201

The quotation has been analyzed in Andrew Leonard (2007-12-21), " The Unhappiness of Woodrow Wilson https://www.salon.com/2007/12/21/woodrow_wilson_federal_reserve/" Salon:

I can tell you categorically that this is not a statement of regret for having created the Federal Reserve. Wilson never had any regrets for having done that. It was an accomplishment in which he took great pride.

John M. Cooper, professor of history and author of several books on Wilson, as quoted by Andrew Leonard
Misattributed

Letter to Sir Edward Grey (15 September 1913)
1910s
Context: We stand equally against government by a plutocracy and government by a mob. There is something to be said for government by a great aristocracy which has furnished leaders to the nation in peace and war for generations; even a democrat like myself must admit this. But there is absolutely nothing to be said for government by a plutocracy, for government by men very powerful in certain lines and gifted with "the money touch," but with ideals which in their essence are merely those of so many glorified pawnbrokers.

Veto Mesage Regarding the Bank of the United States http://avalon.law.yale.edu/19th_century/ajveto01.asp (10 July 1832).
1830s
Context: It is to be regretted that the rich and powerful too often bend the acts of government to their selfish purposes. Distinctions in society will always exist under every just government. Equality of talents, of education, or of wealth can not be produced by human institutions. In the full enjoyment of the gifts of Heaven and the fruits of superior industry, economy, and virtue, every man is equally entitled to protection by law; but when the laws undertake to add to these natural and just advantages artificial distinctions, to grant titles, gratuities, and exclusive privileges, to make the rich richer and the potent more powerful, the humble members of society — the farmers, mechanics, and laborers — who have neither the time nor the means of securing like favors to themselves, have a right to complain of the injustice of their government. There are no necessary evils in government. Its evils exist only in its abuses. If it would confine itself to equal protection, and, as Heaven does its rains, shower its favors alike on the high and the low, the rich and the poor, it would be an unqualified blessing.

As quoted in Andrew Johnson, Plebeian and Patriot (1928) by Robert Watson Winston
Quote