Pride and Prejudice is a very successful novel of Jane Austen. If we look at the characters background about social class, we can find the presence of characters from lower, middle and upper classes. Mr. Darcy is a rich man and his friend Mr. Bingley is also from a rich family. The Bennet sisters are from the middle class background and their friends and relatives belong to the same level. There are some servants from the lower class. It seems to me that Jane Austen has more soft corner for the Middle class people. Most of the rich people except Mr. Darcy and Mr. Bingley are stupid and arrogant. They have artificial life and artificial manner.
On the other hand, we have a smart girl in Elizabeth Bennet. Her sister Jane is also a good person with good quality.