Frederic Leighton to James McNeill Whistler: 'My dear Whistler, you leave your pictures in such a sketchy, unfinished state. Why don't you ever finish them?' James McNeill Whistler to Frederic Leighton: 'My dear Leighton, why do you ever begin yours?

An artist is not paid for his labor but for his vision.

Paint should not be applied thick. It should be like a breath on the surface of a pane of glass.

As light fades and the shadows deepen, all petty and exacting details vanish, everything trivial disappears, and I see things as they are in great strong masses: the buttons are lost, but the sitter remains; the sitter is lost, but the shadow remains; the shadow is lost, but the picture remains. And that, night cannot efface from the painter's imagination.

I remember that at one time I always made a drawing before going to bed!! - Of myself I mean - though I finally destroyed most of them.

A picture is finished when all trace of the means used to bring about the end has disappeared.

Art should be independent of all clap-trap - should stand alone, and appeal to the artistic sense of eye or ear, without confounding this with emotions entirely foreign to it, as devotion, pity, love, patriotism and the like. All these have no kind of concern with it; and that is why I insist on calling my works 'arrangements' and 'harmonies.