Quote 1
"Can I have the carriage?" said Jane.
"No, my dear, you had better go on horseback, because it seems likely to rain; and then you must stay all night." (7.22-23)
All's fair in love and war, including incredibly transparent tricks. Luckily, Mr. Bingley is way too good-natured to see through it, even if his sisters do.
Quote 2
"They have both," said she, "been deceived, I dare say, in some way or other, of which we can form no idea. Interested people have perhaps misrepresented each to the other. It is, in short, impossible for us to conjecture the causes or circumstances which may have alienated them, without actual blame on either side." (17.1-2)
Jane can't believe Wickham's story about Darcy, so she comes up with an explanation: they've been deceived. Unfortunately, they're the ones who are being deceived by that class A liar, Wickham.
Quote 3
"I will answer for it, he never cared three straws about her—who could about such a nasty little freckled thing?"
Elizabeth was shocked to think that, however incapable of such coarseness of expression herself, the coarseness of the sentiment was little other than her own breast had harboured and fancied liberal! (39.13-15)
This is a really great moment, pointing out how that Lydia isn't some kind of totally alien outsider in her family. She's more like their irrepressible id, the side of all of them that's is interested in comfort, pleasure, food, and sex. It's not that Lydia thinks differently than others; it's just that she actually says what she's thinking. The girl just talks with no filter.
Quote 4
"If it was to be secret," said Jane, "say not another word on the subject. You may depend upon my seeking no further." […] Jane's delicate sense of honour would not allow her to speak to Elizabeth privately of what Lydia had let fall; Elizabeth was glad of it;—till it appeared whether her inquiries would receive any satisfaction, she had rather be without a confidante. (51.28-35)
For a character who is often kind of dismissed for being overly nice and trusting of everyone, Jane actually has a fairly complicated moral code. First, the idea of never prejudging a situation and giving everyone as much benefit of the doubt as possible—and now this, the ability to repress curiosity entirely. Impressive!
Quote 5
My dearest Lizzy will, I am sure, be incapable of triumphing in her better judgement, at my expense, when I confess myself to have been entirely deceived in Miss Bingley's regard for me. But, my dear sister, though the event has proved you right, do not think me obstinate if I still assert that, considering what her behaviour was, my confidence was as natural as your suspicion. I do not at all comprehend her reason for wishing to be intimate with me; but if the same circumstances were to happen again, I am sure I should be deceived again. (26.26)
Regina George has nothing on Caroline Bingley: we know that Caroline Bingley befriended Jane because she was the only tolerable woman around Netherfield. As soon as they were back in London—and as soon as she figured out that her brother thought Jane was pretty nice, too—she friend-dumps her.