What does Walden mean when he uses the phase about "building your castle in the air"

Describe de setting of the 1980 bbc adaptation. what time and time and place are indicated by the set and costumes ?

Read the excerpt from "a modest proposal." the poorer tenants will have something valuable of their own, which by law may be made liable to a distress, and to pay their landlord's rent, their corn and cattle being already seized, and money a thing unknown. which statement effectively uses a quotation to show that swift claims that the poor will also benefit from his proposal? “swift writes that poorer tenants will have something valuable of their own, which by law may be made liable to a distress.” swift writes that poorer tenants will finally have something to pay their landlord’s rent since they have neither money nor trade. swift writes that poorer tenants will have something to trade for rent since “their corn and cattle” have already been seized. swift writes that “poorer tenants will have something valuable of their own” that can “ to pay their landlord’s rent.”

Urgently need to do with 1-20. you very much!