Hawthorne on painting a good read!

"Paint is limited in its range as nature is not, therefore keep the lights (the sky, the water, and the sand, the top of the parasol or anything in sunlight) as near the same value as possible. Keep the mass that is in shadow, always in shadow, and make differences by gradations of color". Hawthorne on painting

I'm reading Thomas W Hawthrones book on painting. It's a wonderful little book but what really got my attention is the way Hawthorne teaches to see colour and paint it. He talks a lot about shilloette against light and seeing the mass of colour against another. 

Just thought I would share this book and see what people think? It's on Amazon and is good in the kindle edition.