When does a piece of clothing become fashion? When does it imprint itself onto your consciousness—transforming how you view the tactile and the permanent? For me, it was that moment when I first ...

This was a year whose high points included Joan Jonas’s luminous survey, the extravaganza “PST ART,” and the 24-karat beauty of a show “Siena: The Rise of Painting, 1300-1350.” By ...