Donald Judd slept a lot. After spending a weekend at Chinati, the art museum that he established in Marfa, Texas, I can understand why. To view the sundry installations by Dan Flavin, John Chamberlain or, most important, Judd himself, requires a two-mile walk around the complex of buildings once known as Fort D.A. Russell. The 340 acres of land extends to a barely visible horizon of low-slung mountains, an unbroken vista but for Judd’s massive concrete containers, standing sentinel. So much space is enervating. It defies the very concept of an agenda. When asked the date, a local Marfian answers, "Does it really matter?" In Marfa, it doesn’t seem to matter -- which is a congenial condition for a nap and explains the beds that Judd kept in his studios.