Pathology
Lawrence (and, to a lesser degree, Joanna) is characterized by extreme agoraphobia and fear of the outside world. He is suspicious of everything that Joanna tells him about outside and, at the end of the play, refuses to go out, even to save Joanna's life.
It is obvious that Lawrence believes totally in the existence of Edna and Claypone, and for the most part Joanna seems to share this belief. However, when Lawrence sends Edna to fetch the doctor, Joanna screams, "No, Lawrence, you go! YOU GO!!!' This implies that Joanna knows that Edna doesn't really exist and can't fetch the doctor, and has merely been pretending for Lawrence's sake.
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Famous quotes containing the word pathology:
“It is often said that Poland is a country where there is anti-semitism and no Jews, which is pathology in its purest state.”
—Bronislaw Geremek (b. 1932)