Association with my pupils has kept me young in my work. Criticism of their work has kept my own point of view clear.

You must try to match your colors as nearly as you can to those you see before you, and you must study the effects of light and shade on nature's own hues and tints.

I don't believe in making pencil sketches and then painting landscape in your studio. You must be right under the sky.

Life is very short... but I would like to live four times and if I could, I would set out to do no other things than I am seeking now to do.