"The imitable sciences are those in which the disciple becomes the equal of his master, and produces his results similarly. These are useful to the imitator but are not as excellent as are those which cannot be left as an inheritance, as can other things. Among the latter painting is foremost. It cannot be taught to those who are not naturally fitted for it, as can mathematics, where the discipline absorbs as much as the teacher reads to him. It cannot be copied as can words and phrases, where the copy is worth as much as the original, insofar as the excellent of the work is concerned. It does not have an infinity of progeny as does the printing of books. Painting alone remanins precious and unique, never bringing forth children equal to itself." Leonardo Da Vinci
