Describe symbolism in Wyrd Sisters by Terry Pratchett

The Fool is a tragic character. He, like Lord Felmet, is crushed by his own sense of propriety, too preoccupied with what he feels like he ought to do that he won't consider his own wants and needs. Magrat, in this case, represents that part of the Fool which he has long denied himself: love, romance and desire. The Fool's sudden retreat is symbolic of his habitual denial of these things, as well as representing Magrat's own fear of rejection. These are the obstacles these two lovers face.