“The people are on the side of sound money. They are so unalterably on the side of sound money that it is a serious question how they would regard the system under which they live, if they once knew what the initiated can do with it.”

Attributed to Henry Ford by Charles Binderup (March 19, 1937), Congressional Record—House vol. 81, p. 2528. The quote is preceded by "It was Henry Ford who said, in substance, this," indicating that it was a paraphrase rather than an actual quote. Ford wrote at length in My Life and Work (1923) against the dominance of finance over industry, including a remark in Chapter XII, quoted above, which is very similar to the attributed statement.
Misattributed

Source: 1Q84

Part II, Ch. XIII <!-- Sect. 4 -->
The Pilgrim's Progress (1678), Part II
Context: Then Mr. Honest called for his friends, and said unto them, I die, but shall make no will. As for my honesty, it shall go with me; let him that comes after be told of this. When the day that he was to be gone was come, he addressed himself to go over the river. Now the river at that time over-flowed its banks in some places; but Mr. Honest, in his lifetime, had spoken to one Good-conscience to meet him there, the which he also did, and lent him his hand, and so helped him over. The last words of Mr. Honest were, Grace reigns! So he left the world.After this it was noised abroad that Mr. Valiant-for-truth was taken with a summons by the same post as the other, and had this for a token that the summons was true, "That his pitcher was broken at the fountain." When he understood it, he called for his friends, and told them of it. Then said he, I am going to my Father’s; and though with great difficulty I have got hither, yet now I do not repent me of all the trouble I have been at to arrive where I am. My sword I give to him that shall succeed me in my pilgrimage, and my courage and skill to him that can get it. My marks and scars I carry with me, to be a witness for me that I have fought His battles who will now be my rewarder. When the day that he must go hence was come, many accompanied him to the river-side, into which as he went, he said, "Death, where is thy sting?" And as he went down deeper, he said, "Grave, where is thy victory?"
So he passed over, and all the trumpets sounded for him on the other side.

During a discussion in Milton Friedman's "Free to Choose" television series in 1980.
1980s–1990s

book, Harpo Speaks

Twitter 17 Oct 2019
2019

On Truth and Lie in an Extra-Moral Sense (1873)
Context: The various languages placed side by side show that with words it is never a question of truth, never a question of adequate expression; otherwise, there would not be so many languages. The "thing in itself" (which is precisely what the pure truth, apart from any of its consequences, would be) is likewise something quite incomprehensible to the creator of language and something not in the least worth striving for. This creator only designates the relations of things to men, and for expressing these relations he lays hold of the boldest metaphors.' To begin with, a nerve stimulus is transferred into an image: first metaphor. The image, in turn, is imitated in a sound: second metaphor. And each time there is a complete overleaping of one sphere, right into the middle of an entirely new and different one.

Source: Flash Boys (2014), p. 55