William Hogarth,
The Analysis of Beauty
“ The face indeed will bear a constant view, yet always entertain and keep our curiosity awake, without the assistance either of a mask, or veil; because vast variety of changing circumstances keeps the eye and the mind in constant play, in following the numberless turns of expression it is capable of. How soon does a face that wants expression grow insipid, tho' it be ever so pretty?—The rest of the body, not having these advantages in common with the face, would soon satiate the eye, were it to be as constantly exposed, nor would it have more effect than a marble statue. ”

