They were hopeless of remedy. Her father, contented with laughing at them, would never exert himself to restrain the wild giddiness of his youngest daughters; and her mother, with manners so far from right herself, was entirely insensible of the evil. Elizabeth had frequently united with Jane in an endeavour to check the imprudence of Catherine and Lydia; but while they were supported by their mother’s indulgence, what chance could there be of improvement? Catherine, weak-spirited, irritable, and completely under Lydia’s guidance, had been always affronted by their advice; and Lydia, self-willed and careless, would scarcely give them a hearing. They were ignorant, idle, and vain. While there was an officer in Meryton, they would flirt with him; and while Meryton was within a walk of Longbourn, they would be going there forever.
– Jane Austen
Pride and Prejudice, Chapter 37. Elizabeth reflects on the flaws of her family after reading Darcy’s letter. From her father’s judgmental sarcasm, to the flirtations of her wild youngest sisters Kitty and Lydia, to the unwillingness of Mr. and Mrs. Bennet to control their behavior – the family is beyond remedy, Elizabeth says.