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It is a truth universally acknowledged, that a single man in possession of a good fortune, must be in want of a wife. (Mrs Bennet Chapter 1):

This sentence offers a miniature sketch of the entire plot, which concerns itself with the pursuit of “single men in possession of a good fortune” by various female characters. The preoccupation with socially advantageous marriage in nineteenth-century English society manifests itself here, for in claiming that a single man “must be in want of a wife,” the narrator reveals that the reverse is also true: a single woman, whose socially prescribed options are quite limited, is in (perhaps desperate) want of a husband.

"It will be no use to us, if twenty such should come, since you will not visit them." (Mrs Bennet (I think)):

Only men may be the first of the family to call on a new neighbor – Mrs. Bennet certainly could not ride over to Netherfield to welcome Mr. Bingley to the neighborhood.

"An unhappy alternative is before you, Elizabeth. From this day you must be a stranger to one of your parents. Your mother will never see you again if you do not marry Mr. Collins, and I will never see you again if you do." (Mr Bennet after Mr Collins's proposal):

One hand: Mr. Bennet steps up to his fatherly responsibilities when he has to. Other hand: He undermines his wife's influence. Also, think about it from Mrs. Bennet's perspective. Sure Mr. Collins is an idiot, but when Mr. Bennet dies, Mrs. Bennet's daughters will be poor and kicked out of their home. You can't blame her for wanting her daughters to have a secure future, even if it means marrying silly men like Mr. Collins.

"Lydia will never be easy until she has exposed herself in some public place or other, and we can never expect her to do it with so little expense or inconvenience to her family as under the present circumstances." (Mr Bennet):

Mr. Bennet is basically saying that Lydia is destined to humiliate herself, and that going to Brighton is a great opportunity for her to do it without costing him too much money and inconvenience. Do we have to spell out what we're thinking? Mr. Bennet isn't being a super-good parent here. His lax attitude comes back to bite him however when Lydia runs off with Mr. Wickham. Both Elizabeth and Mr. Bennet already seem of know all along that Lydia's whole Brighton adventure is going to end in nothing but trouble. It's interesting that Mr. Bennet's approach to raising his daughter is one that is probably more often used for boys (since his theory is that Lydia needs to sow wild oats at some point in her teenage years). Elizabeth, on the other hand, has a little more perspective on the fact that, in their society, what would be water under the bridge for boys would mean social annihilation for girls.

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