On the Sublime and Beautiful/Part III/Chapter 19

THE physiognomy has a considerable share in beauty, especially in that of our own species. The manners give a certain determination to the countenance; which, being observed to correspond pretty regularly with them, is capable of joining the effect of certain agreeable qualities of the mind to those of the body. So that to form a finished human beauty, and to give it its full influence, the face must be expressive of such gentle and amiable qualities as correspond with the softness, smoothness, and delicacy of the outward form.