Quote 4
BENEATHA
…Did you dream of yachts on Lake Michigan, Brother? Did you see yourself on that Great Day sitting down at the Conference Table, surrounded by all the mighty bald-headed men in America? All halted, waiting, breathless, waiting for your pronouncements on industry? Waiting for you – Chairman of the Board!…I look at you and I see the final triumph of stupidity in the world! (3.1.60)
Beneatha ridicules her brother for the possibility of ever dreaming that big. She is extremely bitter that he has put his dreams ahead of hers, making it impossible for her to go to medical school.
Quote 5
BENEATHA
Bad? Say anything bad to him? No – I told him he was a sweet boy and full of dreams and everything is strictly peachy keen, as the ofay kids say! (3.1.60)
Beneatha blames her brother's dreams for the family's downfall. She seems to think that he deserves to have bad things said to him and the rest of the family needs to stop babying him.
Quote 6
BENEATHA
What they think we going to do – eat ‘em?
RUTH
No, honey, marry ‘em. (2.3.102-3)
Ruth suggests that segregation is a result of a fear of "miscegenation" (a.k.a. interracial marriage). Some people in the white majority were very concerned about interracial marriage. They saw it as a threat to their culture.