The themes of Pride and Prejudice that withstand among others include a) the role of women in society, b) the need for marriage to substantiate a woman's role in society, and c) the role of social rank and it expectations. What can be worthy of comment is that Mrs Bennet made it clear to the reader that she is quite concerned about all three. First, her daughters are unable to inherit the estate of their father because they are not males, like the law states. Second, because of this, she must ensure she marries them off before her husband dies or else she and the daughters will be under the mercy of Mr. Collins, to whom the estate is entailed. Third, she has to try her best at marrying them rich, even if unable to provide a dowry. This one last part is what makes social rank so important. At that time, you were treated as good as what you were worth. Mrs. Bennet nearly always referred to Bingley and Darcy by their net worth, rather than by their other attributes. Hence, marriage and social rank were the Bennet sister's meal ticket. In all, Pride and Prejudice offers an open window onto which we can see society , and judge it for what it used to be.
That very character had 'pride' and 'prejudice' through out the story. And I strongly believe that everyone has a bit of 'pride' and 'prejudice' in all of us.