Draft letter on the bronze doors of Piacenza Cathedral
Leonardo warns the overseers not to rush the commission to an unworthy master
This densely written sheet is a draft of a letter addressed to the venerable and magnificent overseers of works (fabbriceri) of Piacenza, who have resolved to commission great bronze works. Leonardo urges them not to be so hasty in awarding the contract that they lose the chance to choose a worthy master, lest an incompetent man disgrace himself and their age before posterity. He cites the bronze doors of the Florentine baptistery as a standard, argues that both Florence and Piacenza are 'lands of passage' judged by foreigners through their works, and disparages the local candidates as jug-makers, armourers and bell-founders. He concludes that only 'Lonar the Florentine', who is casting the bronze horse of Duke Francesco, is of worth, though he doubts even he will ever finish so great a work.
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Do not be hasty in awarding the great bronze work
Leonardo counsels the overseers not to be so swift in awarding the commission for their great bronze works that they lose the chance to make a good choice of work and of master. A man chosen for his insufficiency would, in the eyes of their successors, bring disgrace upon himself and upon their age, for Italy is running short of good talents.
Cathedral doors as the face a city shows to strangers
He argues that the principal parts sought out in cities are their cathedrals, and that on approaching them the first things to strike the eye are the doors through which one enters the church. He holds up the bronze doors of the Florentine baptistery as works that make foreigners judge a city furnished with worthy inhabitants.
Scorn for the unworthy local candidates
Leonardo grieves to recall what men have conferred with him about entering the undertaking without regard to their competence: one a master of jugs, one of cuirasses, one a bell-founder, another a maker of little bells, even a bombardier. One boasts of being a crony of Messer Ambrosio Ferrere and threatens to ride to the Lord for letters so the work will never be denied him.
Only 'Lonar the Florentine' and the bronze horse of Duke Francesco
He warns that from this land nothing but common, base and coarse workmanship can be drawn, and that no man there is of worth save 'Lonar the Florentine', who is casting the bronze horse of Duke Francesco. Yet even he, Leonardo doubts, will never finish so great a work, having enough to occupy his whole lifetime.
