Many of the play's characters seem to be guilty of pride. They tend think very highly of themselves and are concerned about maintaining face in public. Often in literature, pride is shown as a destructive force. This is certainly true to a certain extent in An Enemy of the People; it causes no end of trouble. In the end, however, we see how one person's pride and resolute self-confidence could just be the saving grace of all of society.
The Doctor's pride in standing up for what is right allows the play to end with hope.
Pride makes each character act brashly and inconsiderately, causing only chaos.