“Degrade first the arts if you'd mankind degrade,
Hire idiots to paint with cold light and hot shade.”

The Soul of Man Under Socialism (1891)

Hofmann's quote in: 'Space pictorially realized through the intrinsic faculty of the colors to express volume' in New Paintings by Hans Hofmann (1951); also in Hans Hofmann (1998) by Helmut Friedel and Tina Dickey
1950s

Arts in society, Volume 3, 1964, p. 240
1960s

"Art Under Plutocracy" (1883).
Context: So long as the system of competition in the production and exchange of the means of life goes on, the degradation of the arts will go on; and if that system is to last for ever, then art is doomed, and will surely die; that is to say, civilization will die.

Upon being forced to leave a train car due to his color, as quoted in Up from Slavery (1901), Ch. VI: "Black Race And Red Race, the penalty of telling the truth, of telling the simple truth, in answer to a series of strange questions", by Booker T. Washington

Source: Where Angels Fear to Tread (1905), Ch. 10
Context: This woman was a goddess to the end. For her no love could be degrading: she stood outside all degradation. This episode, which she thought so sordid, and which was so tragic for him, remained supremely beautiful. To such a height was he lifted, that without regret he could now have told her that he was her worshipper too. But what was the use of telling her? For all the wonderful things had happened.
"Thank you," was all that he permitted himself. "Thank you for everything."

Annotations to Sir Joshua Reynolds's Discourses
1790s

The trial of Charles B. Reynolds for blasphemy (1887)