David Rosand is Meyer Schapiro Professor of Art History at Columbia University. He is the author of several books, including The Meaning of the Mark: Leonardo and Titian; Painting in Sixteenth-Century Venice: Titian, Veronese, Tintoretto; Robert Motherwell on Paper: Drawings, Prints, Collages; Myths of Venice: The Figuration of a State; and Drawing Acts: Studies in Graphic Expression and Representation.