It is as a divine decoration that Sienese art comes to us in the profound and splendid work of Duccio di Buoninsegna, the delicate and lovely work of Simone Martini, the patient work of the Lorenzetti. The masterpiece, perhaps, of Duccio is the great Rucellai Madonna of S. Maria Novella. There is none of his work in the Uffizi; but one of the most