Twelfth Night concerns itself with the well-being of human lovemaking. Orsino and Olivia, in their hothouse self-regards, impart the lassitude of this to their respective households, while the castaways, Viola and Sebastian, despite the uncertainty of their predicaments on the beach, preserve intact an élan vital prompting from them immediate action, bringing about prompt effect. Exogamy, so we will learn from this, has a decisive advantage of vitality over endogamy when it comes to partnering in Illyria. And for all that the action of the play centres on two Illyrian households, the comedy in its conventional course towards “All’s well…