Great art is the outward expression of an inner life in the artist, and this inner life will result in his personal vision of the world.

I use a retouching varnish which is made in France, Libert, and that's all the varnish I use.

It's to paint directly on the canvas without any funny business, as it were, and I use almost pure turpentine to start with, adding oil as I go along until the medium becomes pure oil. I use as little oil as I can possibly help, and that's my method.

More of me comes out when I improvise.

If the picture needs varnishing later, I allow a restorer to do that, if there's any restoring necessary.

Well, I've always been interested in approaching a big city in a train, and I can't exactly describe the sensations, but they're entirely human and perhaps have nothing to do with aesthetics.

The only real influence I've ever had was myself.