“To tell you the truth, I am rather perplexed about the concept of "art]. What one person considers to be "art" is often not "art" to another. "Beautiful" and "ugly" are old-fashioned concepts that are seldom applied these days; perhaps justifiably, who knows? Something repulsive, which gives you a moral hangover, and hurts your ears or eyes, may well be art. Only "kitsch" is not art — we're all agreed about that. Indeed, but what is "kitsch?"”
If only I knew!
1950's, On Being a Graphic Artist', 1953
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M. C. Escher 32
Dutch graphic artist 1898–1972Related quotes

Henry Flynt: "Essay: Concept Art." (1961) In: La Monte Young (ed.) An Anthology, 1963.

“The boundary between art and kitsch was negotiable, even porous.”
Source: Blue Remembered Earth (2012), Chapter 7 (p. 162)
Why Do Religions Teach Love and Yet Cause So Much War?
Context: If you are talking to me about your new car, you are the first person, I am the second person, and the car is the third person.
These pronouns actually represent three perspectives that human beings can take when they talk about the world or attempt to know the world... The fascinating part is that these three perspectives might actually give rise to art, morals, and science. Or the Beautiful, the Good, and the True: the Beauty that is in the eye (or the "I") of the beholder; the Good or moral actions that can exist between you and me as a "we"; and the objective Truth about third-person objects (or "its") that you and I might discover: hence, art ("I"), morals ("we"), and science ("it").

"105 Years of Illustrated Text" in the Zoetrope All-Story, Vol. 5 No. 1.
105 Years of Illustrated Text
Quote of Ad Reinhardt (1963); as cited in: Joseph Kosuth, (1969), " Art after Philosophy http://www.ubu.com/papers/kosuth_philosophy.html"
1956 - 1967
Variant: The one thing to say about art is that it is one thing. Art is art-as-art and everything else is everything else. Art as art is nothing but art. Art is not what is not art.
On making beautiful artwork in “Gronk by Marisela Norte” https://bombmagazine.org/articles/gronk/ in BOMB Magazine (2007 Jan 1)

This Business of Living (1935-1950)