The value of an idea has nothing whatsoever to do with the sincerity of the man who expresses it. Indeed, the probabilities are that the more insincere the man is, the more purely intellectual will the idea be, as in that case it will not be coloured by either his wants, his desires, or his prejudices.
Miss Prism: Do not speak slightingly of the three-volume novel, Cecily. I wrote one myself in earlier days. Cecily: Did you really, Miss Prism? How wonderfully clever you are! I hope it did not end happily? I don't like novels that end happily. They depress me so much. Miss Prism: The good ended happily, and the bad unhappily. That is what fiction means.
As for borrowing Mr. Whistler's ideas about art, the only thoroughly original ideas I have heard him express have had reference to his own superiority as a painter over painters greater than himself.