Don't put needless expense into painting a head! Don't try to match tints! Rose and pearly colours blend into each other so that no one can unite them if painted separately. Keep the impression of your subject as one thing!
Art teaches you the philosophy of life, and if you can't learn it from art, you can't learn it at all. It shows you that there is no perfection. There is light, and there is shadow. Everything is in half tint.
I don't like persuaded sitters. I never could paint a cat if the cat had any scruples, religious, superstitious, or otherwise, about sitting.
Painting is the only universal language. All nature is creation's picture book. Painting alone can describe every thing which can be seen, and suggest every emotion which can be felt. Art reaches back into the babyhood of time, and is man's only lasting monument.
Beauty is that little something that fills the whole world, and is contained neither in a single straight nose, a long eyelash, nor a blue mountain. Some see it in a leg of mutton, others in a compound fracture; and to expect others to accept one's own definition of it is as absurd as to expect all humanity to use the same toilet-brush.
How are we going to make painters by lecturing to them? We are going to make questioners, doubters, and talkers. We are going to make painters by painting ourselves, and by showing the paintings of others. By working frankly from our convictions, we are going to make them work frankly from theirs.