While it may be a really trying, weird time for the art world, I see good work all the time. If you just go around to that many galleries, and if you stay open, you're going to see work with enough energy and surprise. I don't think I've ever gone to the galleries without coming home thinking, Gee, I now know something I didn't know this morning.

Make an enemy of jealousy and envy. As fast and soon as you can…. The art world is high school with money.

All of Koons's best art - the encased vacuum cleaners, the stainless-steel Rabbit (the late-twentieth century's signature work of Simulationist sculpture), the amazing gleaming Balloon Dog, and the cast-iron re-creation of a Civil War mortar exhibited last month at the Armory - has simultaneously flaunted extreme realism, idealism, and fantasy.

Mission accomplished. The Museum of Modern Art's wide-open, tall-ceilinged, super-reinforced second floor was for all intents and purposes built to accommodate monumental installations and gigantic sculptures, should the need arise. It has arisen.

My culture-deprived, aspirational mother dragged me once a month from our northern suburb - where the word art never came up - to the Art Institute of Chicago. I hated it.

Chris Ofili's suave, stippled, visually tricked-out paintings of the nineties, with their allover fields of shimmering dots and clumps of dung, are like cave paintings of modern life. They crackle with optical cockiness, love, and massive amounts of painterly mojo.

Artschwager's art always involves looking closely at surfaces, questions what an object is, wants to make you forget the name of the thing you're looking at so that it might mushroom in your mind into something that triggers unexpected infinities.