it is our own vanity that decives us

Yes, occasionally, in the novel........ the theme of vanity is Pride. As said in the words of Mary at the beginning of the novel, "human nature is particularly prone to [pride]" (Volume I, Chapter 5). In the novel, pride prevents the characters from seeing the truth of a situation and from achieving happiness in life. Pride is one of the main barriers that creates an obstacle to Elizabeth and Darcy's marriage. Darcy's pride in his position in society leads him initially to scorn anyone outside of his own social circle. Elizabeth's vanity clouds her judgment, making her prone to think ill of Darcy and to think well of Wickham. In the end, Elizabeth's rebukes of Darcy help him to realize his fault and to change accordingly, as demonstrated in his genuinely friendly treatment of the Gardiners, whom he previously would have scorned because of their low social class. Darcy's letter shows Elizabeth that her judgments were wrong and she realizes that they were based on vanity, not on reason.