Donatello was apparently inactive during the last three years at Padua, the work for the San Antonio altar unpaid for and the Gattamelata monument not placed until 1453. He had dismissed the large force of sculptors and stone masons used on these projects. Offers of other commissions reached him from Mantua, Modena, Ferrara, and even perhaps from Naples, but nothing came of them. Clearly, Donatello was passing through a crisis that prevented h...