Experience, Mistress of Masters: Proem and Fable of the Owl
A defense of the inventor against mere reciters of others' works, with the fable of the thrushes and the captured owl
This leaf carries one of Leonardo's literary proems. In place of cited authorities he claims experience, the mistress of the masters themselves, and scorns those who parade in others' labors as mere trumpeters and reciters, likening them to a reflection that is nothing beside its object. Under the heading Fable he tells how the thrushes rejoiced to see a man capture the owl and bind its feet, only for the limed owl to become the cause of their own death, a warning to peoples who rejoice at the loss of their leaders' liberty. A marginal note repeats the words Proem and Witticism.
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Proem: the inventor against the trumpeters of others' works
Leonardo answers those who would fault him for not citing authorities: he cites experience, the mistress of their masters. He calls his critics puffed up and pompous, dressed in others' labors, mere trumpeters and reciters, and likens them to a likeness in a mirror that is nothing beside its object. It is a personal manifesto in defense of the inventor.
Fable of the thrushes and the owl
The thrushes rejoiced to see a man seize the owl and bind its feet with strong cords. But the owl, by means of birdlime, became the cause not of the thrushes' lost liberty only, but of their very death. Leonardo applies it to lands that rejoice to see their leaders lose their freedom, and so are left bound in the power of their enemy.
