In Sparta, paintings have been taken out of certain walls by cutting through the bricks, then have been placed in wooden frames,… — Marcus Vitruvius Pollio Copy Share Image
You should look at certain walls stained with damp, or at stones of uneven color. If you have to invent some backgrounds… — Leonardo da Vinci Copy Share Image
I am reminded, now, of Leonardo's advice to painters: You should fix your eyes, he says, on certain walls stained with damp.… — Ciaran Carson Copy Share Image