Critic

After its hothouse incubation in the seventies, appropriation breathed important new life into art. This life flowered spectacularly over the decades - even if it's now close to aesthetic kudzu.

Abstract Expressionism - the first American movement to have a worldwide influence - was remarkably short-lived: It heated up after World War II and was all but done for by 1960 (although visit any art school today and you'll find a would-be Willem de Kooning).

Probably only an art-worlder like me could assign deeper meaning to something as simple and silly as Tebowing. But, to us, anytime people repeat a stance or a little dance, alone or together, we see that it can mean something. Imagistic and unspoken language is our thing.

Decades ago, Gerhard Richter found a painterly philosopher's stone. Like Jackson Pollock before him, he discovered something that had been in painting all along, always overlooked or discounted.

First let me report that the art in the Barnes Collection has never looked better. My trips to the old Barnes were always amazing, but except on the sunniest days, you could barely see the art. The building always felt pushed beyond its capacity.

Appropriation is the idea that ate the art world. Go to any Chelsea gallery or international biennial and you'll find it. It's there in paintings of photographs, photographs of advertising, sculpture with ready-made objects, videos using already-existing film.

Lucian Freud's career affirms that the only thing an artist can do is remain true to whatever vision, (lack of) talent, or ideas that happened to pick them in order to be made known to the world.