Benvenuto Cellini (15001571). Autobiography. The Harvard Classics. 190914.
THE FIRST piece I cast in bronze was that great bust, the portrait of his Excellency, which I had modelled in the goldsmiths workroom while suffering from those pains in my back.1 It gave much pleasure when it was completed, though my sole object in making it was to obtain experience of clays suitable for bronze-casting. I was of course aware that the admirable sculptor Donatello had cast his bronzes with the clay of Florence; yet it seemed to me that he had met with enormous difficulties in their execution. As I thought that this was due to some fault in the earth, I wanted to make these first experiments before I undertook my Perseus. From them I learned that the clay was good enough, but had not been well understood by Donatello, inasmuch as I could see that his pieces had been cast with the very greatest trouble. Accordingly, as I have described above, I prepared the earth by artificial methods, and found it serve me well, and with it I cast the bust; but since I had not yet constructed my own furnace, I employed that of Maestro Zanobi di Pagno, a bell-founder.
When I saw that this bust came out sharp and clean, I set at once to construct a little furnace in the workshop erected for me by the Duke, after my own plans and design, in the house which the Duke had given me. No sooner was the furnace ready than I went to work with all diligence upon the casting of Medusa, that is, the woman twisted in a heap beneath the feet of Perseus. It was an extremely difficult task, and I was anxious to observe all the niceties of art which I had learned, so as not to lapse into some error. The first cast I took in my furnace succeeded in the superlative degree, and was so clean that my friends thought I should not need to retouch it. It is true that certain Germans and Frenchmen, who vaunt the possession of marvellous secrets, pretend that they can cast bronzes without retouching them; but this is really nonsense, because the bronze, when it has first been cast, ought to be worked over and beaten in with hammers and chisels, according to the manner of the ancients and also to that of the modernsI mean such moderns as have known how to work in bronze.
The result of this casting greatly pleased his Excellency, who often came to my house to inspect it, encouraging me by the interest he showed to do my best. The furious envy of Bandinello, however, who kept always whispering in the Dukes ears, had such effect that he made him believe my first successes with a single figure or two proved nothing; I should never be able to put the whole large piece together, since I was new to the craft, and his Excellency ought to take good heed he did not throw his money away. These insinuations operated so efficiently upon the Dukes illustrious ears, that part of my allowance for workpeople was withdrawn. I felt compelled to complain pretty sharply to his Excellency; and having gone to wait on him one morning in the Via de Servi, I spoke as follows: My lord, I do not now receive the monies necessary for my task, which makes me fear that your Excellency has lost confidence in me. Once more then I tell you that I feel quite able to execute this statue three times better than the model, as I have before engaged my word.