Summer is a great time to visit art museums, which offer the refreshing rinse of swimming pools - only instead of cool water, you immerse yourself in art.

Biennial culture is already almost irrelevant, because so many more people are providing so many better opportunities for artists to exhibit their work.

I love art dealers. In some ways, they're my favorite people in the art world. Really. I love that they put their money where their taste is, create their own aesthetic universes, support artists, employ people, and do all of this while letting us see art for free. Many are visionaries.

Photography is the easiest thing to make, and one of the hardest things to make well.

There's one Baldessari work I genuinely love and would like to own, maybe because of my Midwestern roots and love of driving alone. 'The backs of all the trucks passed while driving from Los Angeles to Santa Barbara, California, Sunday, 20 January 1963' consists of a grid of 32 small color photographs depicting just what the title says.

Batty as it sounds, subject and style may choose artists, through some unfathomable cosmic means. How else to explain that even artists who enjoy what they do can be perplexed or even horrified that they're doing it?

Think of an abstract painting as very, very low relief - a thing, not a picture.