Oscar Wilde? G. K. Chesterton? Anonymous?

Question for Quote Investigator: I saw the following remark on the webpage of an educator:
Morality, like art, means drawing a line someplace.
The phrase was attributed to Oscar Wilde, but I have not been able to find it in his oeuvre. It was listed on websites like Goodreads and Quotationspage where it was ascribed to Wilde, but I know that websites with massive compilations of quotations are often packed with misinformation. Would you please explore this saying?
Reply from Quote Investigator: There is no substantive evidence that Oscar Wilde said or wrote this statement.
In the 1920s the English author, journalist, and critic Gilbert Keith Chesterton penned a column in “The Illustrated London News”. In May 1928 he wrote a passage containing a strongly matching expression. Boldface has been added to excerpts:1
Some say that art is unmoral; and some of these arts are very unmoral. I may not have described them here in the correct conventional terms; but then I do not think that art is unmoral. Art, like morality, consists of drawing the line somewhere.
The positions of the terms “art” and “morality” have been switched when compared to the modern instance provided by the questioner. The phrase “drawing the line” wittily referred simultaneously to an artist physically drawing a line on a canvas and figuratively creating an artwork on a subject with moral implications.
This was the earliest strong match located by QI, and QI believes that G. K. Chesterton should be credited with the phrase he wrote and not Oscar Wilde.
Here are additional selected citations in chronological order.
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