"There is no other weapon in the whole feminine armory to which men are so vulnerable as they are to smile. ... It is a thousand pities that women put no stress on cheerfulness as either a virtue or a duty, because there is no other quality that goes so far toward making marriage a success and keeping a husband nailed to his fireside. There is no man doesn't hasten his footstep to his own home at night if he knows he is going to find in it a woman whose smile makes sunshine within it."