Discuss the theme of pride in Jane Austen's 'Pride and Prejudice' thinking about Darcy?

It is not until Darcy overcomes his own prejudice against those of lower social station—by treating Elizabeth and the Gardiners graciously and considerately at Netherfield—that Elizabeth's opinion of him begins to change. "Not only do Elizabeth and Darcy... have the most serious problem of surmounting barriers of misconception and adverse feeling," Heilman declares, "but they are the most sensitive—both in susceptibility to injured feelings and in capacity for getting to the center of things—to matters of prejudice and pride"