Vulgarity is simply the conduct of other people.

Artists reproduce themselves or each other, with wearisome iteration. But criticism is always moving on, and the critic is always developing.

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.

For an artist to marry his model is as fatal as for a gourmet to marry his cook: the one gets no sittings, and the other gets no dinners.

It is always with the best intentions that the worst work is done.

The greatest of all sins is stupidity.

If one were to live his life fully and completely were to give form to every feeling, expression to every thought, reality to every dream.