Clement Greenberg

Criticism proper means dealing in the first place with art as art, which means dealing with value judgments. Otherwise criticism becomes something else. Not that it is to be so narrowly defined as to have to exclude interpretation, description, analysis, etc.; only that it must, if it’s to be criticism, include evaluation, and evaluation in the first place—for the sake of art, for the sake of everything art is that isn’t information or exhoration, for the sake of what’s in art’s gift alone.

— “States of Criticism”