I recently enjoyed reading the book Julia Margaret Cameron's Women, which was full of gorgeous photographs by the wonderful Pre-Raphaelite style photographer.
I had to share a quote though. :)
"A good model was transparent, neither too expressive nor too individualized. Burne-Jones warned against an overly explicit characterization of mythic subjects. Countering criticism of the restraint with which he had imbued the grieving queens in The Sleep of Arthur in Avalon, he wryly commented: 'A little more expression and they would be neither queens nor mysteries nor symbols, but just...Augusta, Esmerelda, and Dolores, considerably overcome by a recent domestic bereavement.'"