“The huge capacity to purchase submission that goes with any large sum of money, well, this we have. This is a power of which we should all be aware.”
The Ashes of Capitalism and the Ashes of Communism (1986)
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John Kenneth Galbraith 207
American economist and diplomat 1908–2006Related quotes

“Few women care to be laughed at and men not at all, except for large sums of money.”
Preface to The Norman Conquests (New York: Grove Press, [1975] 1988) p. 11.

Quoted in Money and Men by Robert McCann Rice (1941) but no prior source is extant.
Misattributed

1860s, Second State of the Union address (1862)

“We are the sum of all we have done added to the sum of all that has been done to us.”
Source: Golden Fool

Light (1919), Ch. XXIII - Face To Face
Context: Only the idolatrous and the weak have need of illusion as of a remedy. The rest only need see and speak.
She smiles, vague as an angel, hovering in the purity of the evening between light and darkness. I am so near to her that I must kneel to be nearer still. I kiss her wet face and soft lips, holding her hand in both of mine.
Yes, there is a Divinity, one from which we must never turn aside for the guidance of our huge inward life and of the share we have as well in the life of all men. It is called the truth.

“The civility which money will purchase, is rarely extended to those who have none.”
Our Parish, Ch. 5 : The Broker’s Man
Sketches by Boz (1836-1837)

Letter to Thomas Jefferson (17 January 1820). Often misquoted as "God is an essence that we know nothing of" and attached to a part of his 22 January 1825 letter to Thomas Jefferson.
1820s

Speaking during the ITV Referendum Debate https://www.youtube.com/watch?v=DMjvG0-dI44 (9 June 2016)
2010s, 2016