"Intelligent, thoughtful tracing is a creative process inasmuch as it gives something of the feeling that the painter must have had.   And when you are doing someting about the understanding of a picture you are getting more than you would by just looking: tactical experience is addded to visual." Ernest W. Watson

"The intrisnic quality of a painting, taking everything into account, is chiefly determined by the quality of the light.   This quality, of course, is the result of a combination of factors in the whole execution of the subject, but its importance lies in the fact that it gives existence to the picture in relation to life itself.  When the light is right we never question a painting's reason for being." Andrew Loomis, The Eye of the Painter