The painter should paint not only what he has in front of him, but also what he sees inside himself. If he sees nothing within, then he should stop painting what is in front of him.
Caspar David FriedrichClose your bodily eye, that you may see your picture first with the eye of the spirit. Then bring to light what you have seen in the darkness, that its effect may work back, from without to within.
Caspar David FriedrichThe divine is everywhere, even in a grain of sand; there I represented it in the reeds.
Caspar David Friedrich