Marlene Dumas is one of the two or three most successful female artists alive, if you judge by prices. I've never reviewed her work, because I find nothing in it to get excited about no matter how hard I look.

To engage with art, we have to be willing to be wrong, venture outside our psychic comfort zones, suspend disbelief, and remember that art explores and alters consciousness simultaneously.

It took me twenty years to get Steven Parrino's work. From the time I first saw his art, in the mid-eighties, I almost always dismissed it as mannered, Romantic, formulaic, conceptualist-formalist heavy-metal boy-art abstraction.

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).

In the seventies, a group of American artists seized the means not of production but of reproduction. They tore apart visual culture at a time of no money, no market, and no one paying attention except other artists. Vietnam and Watergate had happened; everything in America was being questioned.

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.

You can't prove Rembrandt is better than Norman Rockwell - although if you actually do prefer Rockwell, I'd say you were shunning complexity, were secretly conservative, and hadn't really looked at either painter's work. Taste is a blood sport.