My art, what do you want to say about it? Do you think you...

My art, what do you want to say about it? Do you think you can explain the merits of a picture to those who do not see them? . . . I can find the best and clearest words to explain my meaning, and I have spoken to the most intelligent people about art, and they have not understood; but among people who understand, words are not necessary, you say humph, he, ha and everything has been said.