In A Streetcar Named Desire, discuss how the characters are presented in Scene Four.

I think that it is in the Fourth Scene that the nature of
the main characters begins to emerge.  On one hand, Stanley's vindictiveness is on large
display.  He understands Blanche as a threat, and rather than seek to understand "the
other," Stanley simply wants to obliterate it.  In this light, Stanley represents a
dominant force that seeks to crush all other opposing elements in his path.  His desire
to want to find out more about Blanche is expressed in a manner that discredits her, and
hastens her departure.  Blanche's insistence that Stella leave Stanley is done out of a
different motivation.  Blanche's dependence and her absolute terror of being alone is
present in her pleas to her sister.  She does care about Stella's well- being, but in
pleading with her to leave, Blanche is making a desperate stab at finding someone,
anyone, who could take care of her and nurture her.  Blanche's emotional nudity is on
display for all to see, something that Stanley understands and exploits.  Stanley's
primal instincts to protect what it his and eliminate any threats from the outside is
what ends up defining him throughout the play and undermining Blanche at the same
time.