Moskenstraumen

Under the testing of modernism more and more conventions of the art of painting have shown themselves to be dispensable, unessential. But now it has established, it would seem, that the irreducible essence of pictorial art consists in but two constitutive conventions or norms: flatness and the delimination of flatness, and the observance of mere these two norms is enough to create an object that can be experienced as a picture; thus a stretched or tacked up cancas already exists as a picture - though not necessarily as a successful one.

- Clement Greenberg: "After Abstract Expressionism", 1962