It took the Metropolitan Museum of Art nearly 50 years to wake up to Pablo Picasso. It didn't own one of his paintings until 1946, when Gertrude Stein bequeathed that indomitable quasi-Cubistic picture of herself - a portrait of the writer as a sumo Buddha - to the Met, principally because she disliked the Museum of Modern Art.

Being critical of art is a way of showing art respect.

When the purse strings tighten up at museums, the institutions usually cut back and cancel shows. That's exactly the wrong reaction. In fact, now is a good time for them to loosen up - a chance to breathe and experiment a little - and go for the juicy solution lurking in their own basements.

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.

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

Anyone who relishes art should love the extraordinary diversity and psychic magic of our art galleries. There's likely more combined square footage for the showing of art on one New York block - West 24th Street between Tenth and Eleventh Avenues - than in all of Amsterdam's or Hamburg's galleries.

The art world is molting - some would say melting. Galleries are closing; museums are scaling back.