The Mona Lisa of the North

In Girl with a Pearl Earring, a girl glances back out of a dark ground, her lips just parted, a pearl at her ear catching a soft light. Who she is, what she is thinking — the painting says nothing, and it is exactly this blank that has kept her, like the Mona Lisa, an object of speculation for centuries. With the most everyday of glances, Vermeer painted the hardest thing of all: the instant of someone about to speak.