What are the motifs in Watch on the Rhine by Lillian Hellman?

The idea of ignorance takes the form of naïveté as Fanny gradually learns what it is like outside of her sheltered walls. After Fanny is shocked listening to the details of the hardships Sara and her family have endured, Joshua notes her naïveté when he tells her that she "has not seen much of the world." She admits this fact when, by the end of the play she has learned of the harsh reality of the outside world and acknowledges to David, "we are shaken out of the magnolias, eh?"