I also take pleasure in the so-called negative power in Grotjahn's work. That is, I love his paintings for what they are not. Unlike much art of the past decade, Grotjahn isn't simply working from a prescribed checklist of academically acceptable, curator-approved 'isms' and twists.

Art is changing. Again. Here. Now. Opportunities to witness this are rare, so attend and observe.

Early-twentieth-century abstraction is art's version of Einstein's Theory of Relativity. It's the idea that changed everything everywhere: quickly, decisively, for good.

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.

The reason I love blogs so much right now is that I am seeing more critical voices appear, and that's kind of thrilling. I think a lot of critics in their forties or even their thirties have had their voice scared or trained out of them by the academy. I have nothing against the academy. I think it's brilliant and fantastic, but I also think that it's become almost monolithic. The same way a lot of art looks the same, a lot of writing can sound the same and quotes the same theorists.

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.

The last time money left the art world, intrepid types maxed out their credit cards and opened galleries, and a few of them have become the best in the world.