As I went through 'This Progress,' one of two performance pieces by Tino Sehgal that transform Frank Lloyd Wright's emptied-out spiral into a dreamy Socratic-purgatorial journey, the museum literally fell away. I was suspended in some weird nonspace.

Of all the biennials, triennials, quadrennials, internationals, and massive group shows, Documenta, established in 1955 and held once every five years in Kassel, Germany, is seen as the most serious. A statement show.

In some ways Lawler is a conceptual Diane Arbus. She's a stalker who takes advantage of situations. She pulls back curtains, causing normal things to look freakish and the freakish to turn mundane.

Galleries began growing in both number and size in the late seventies, when artists who worked in lofts wanted to exhibit their work in spaces similar to the ones the art was made in.

I hate when dealers talk to me. I love dealers - they're some of our favorite people in the art world. But I hate if they do a sales pitch on me. I can't stand it.

I don't know much about auctions. I sometimes go to previews and see art sardined into ugly rooms. I've gawked at the gaudy prices, and gaped at well-clad crowds of happy white people conspicuously spending hundreds of millions of dollars.

Abstraction brings the world into more complex, variable relations; it can extract beauty, alternative topographies, ugliness, and intense actualities from seeming nothingness.