If I think, I am lost.
Shadow is a colour as light is, but less brilliant; light and shadow are only the relation of two tones.
Painting from nature is not copying the object; it is realizing one's sensations.
You have no idea how life-giving it is to find around one a youth that agrees not to bury one on the spot.
Don't be an art critic. Paint. There lies salvation.
To paint is not to copy the object slavishly, it is to grasp a harmony among many relationships.