"I desire you will do no such thing. Lizzy is not a bit better than the others; and I am sure she is not half so handsome as Jane, nor half so good humored as Lydia. But you are always giving her the preference." (pg. 6)
In this early passage, Austen establishes the special relationship between Mr. Bennet and Elizabeth. Mr. Bennet has no real connection to his other daughters and frequently mocks Lydia for her frivolity, but he loves Elizabeth dearly and even protects her from having to marry Mr. Collins. Austen's decision to have Liz relationship to her father be so strong says a lot about Liz's sensible nature. Mr. bennet's appreciation of Liz's mind as opposed to her pretty face tells the reader that Liz is not like her other sisters but has more substance.