Not to say people shouldn't get rich from art. I adore the alchemy wherein artists who cast a complex spell make rich people give them their money. (Just writing it makes me cackle.) But too many artists have been making money without magic.

Elizabeth Peyton, the artist known for tiny, dazzling portraits of radiant youth, is now painting tiny, dazzling portraits of radiant middle age.

I think that a lot of artists have succeeded in making what I might call "curator's art." Everybody's being accepted, and I always want to say, "Really? That's what you've come for? To make art that looks a lot like somebody else's art?" If I am thinking of somebody else's art in front of your art, that's a problem.

Urs Fischer specializes in making jaws drop. Cutting giant holes in gallery walls, digging a crater in Gavin Brown's gallery floor in 2007, creating amazing hyperrealist wallpaper for a group show at Tony Shafrazi: It all percolates with uncanny destructiveness, operatic uncontrollability, and barbaric sculptural power.

Being critical of art is a way of showing art respect. No sports writer would say, "Well the Yankees had a great season this year." No food critic would get a bad meal and say, "Oh, it was so lovely." It always strikes me as odd when people say, "Why do you write negatively about any art?" I think that everybody has mixed feelings about everything - even Goya. I mean, I look at Rembrandt sometimes and I hear a voice in my head go, "It's pretty brown."

Auction houses run a rigged game. They know exactly how many people will be bidding on a work and exactly who they are. In a gallery, works of art need only one person who wants to pay for them.

It is not possible to overstate the influence of Paul Cezanne on twentieth-century art. He's the modern Giotto, someone who shattered one kind of picture-making and invented a new one that the world followed.