Sister Carrie Isolation/Loneliness Quotes

How we cite our quotes: (Chapter.Paragraph)

Quote #4

[Carrie] thought of going down and buying a few copies of the paper, but remembered that there was no one she knew well enough to send them to. Only Lola, apparently, in all the world was interested. (43.26)

Near the end of the novel, Carrie is quite unhappy about lacking fulfilling relationships and friendships. It's totally fair to ask what responsibility she holds in contributing to that outcome, though. After all, by this point she's invested so much energy into her pursuit of material success, it's little wonder there's not much else in her life.

Quote #5

The metropolis is a cold place socially, and Carrie soon found that a little money brought her nothing… She could feel that there was no warm, sympathetic friendship back of the easy merriment with which many approached her. All seemed to be seeking their own amusement, regardless of the possible sad consequences to others. (43.27) 

Why you gotta be so cold, city people? What is it about the city or "metropolis," as it's represented in the novel, that prevents people from forming "warm, sympathetic friendship"?

Quote #6

So peculiar, indeed, was [Carrie's] lonely, self-withdrawing temper, that she was becoming an interesting figure in the public eye—she was so quiet and reserved. (46.97)

Well at least Carrie doesn't turn into an obnoxious diva. What does being a celebrity have to do with Carrie's sense of loneliness and isolation?