I've gone back to the Frick since then to look at her and at the two other Vermeers. Vermeers, after all, are hard to come by, and the one in Boston has been stolen. The other two are self-contained paintings. The people in them are looking at each other -- the lady and her maid, the soldier and his sweetheart. Seeing them is peeking at them through a hole in a wall. And the wall is made of light -- that entirely credible yet unreal Vermeer light. Light like this does not exist, but we wish it did. We wish the sun could make us young and beautiful, we wish our clothes could glisten and ripple against our skins, most of all, we wish that everyone we knew could be brightened simply by our looking at them, as are the maid with the letter and the soldier with the hat. The girl at her music sits in another sort of light, the fitful, overcast light of life, by which we see ourselves and others only imperfectly, and seldom.