Make a drawing. Start it all over again, trace it. Start it and trace it again.
The fascinating thing, is not to show the source of light, but the effect of light.
Be sure to give the same expression to a person's face that you give to his body.
Realism is more important than the sentiment of the picture.
The artist does not draw what he sees, but what he has to make others see.
He once said that he wished to be famous, but unknown.