" There is not one man in seventy-five hundred that can tell what a pictured face is intended to express. There is not one man in five hundred that can go into a court-room and be sure that he will not mistake some harmless innocent of a juryman for the black-hearted assassin on trial. Yet such people talk of "character" and presume to interpret "expression" in pictures. "

― Mark Twain , The Innocents Abroad