Faces are more than a montage of organs that see, breathe, speak, hear, eat, sing, smell, and yell. As Josephine Tey points out in her mystery novel, The Daughter of Time, the slant of an eyebrow, the set of a mouth, the look of the eye, the firmness of a chin, often can provide evidence of character that is as telling as a report card or a police blotter. Those features depicted on portraits of individuals can be equally telling of the person's...