In conveyancing the ultimately potent thing is not the deed but the
invisible intention and desire of the parties to the deed; the written
document itself is only evidence of this intention and desire. So it is
with music, the written notes are not the main thing, nor is even the
heard performance; these are only evidences of an internal invisible
emotion that can be felt but never fully expressed. And so it is with
the words of literature and with the forms and colours of painting.