The insistence in Darcy's voice is a symptom of his passion for Elizabeth; it emerges even in their most mundane interactions. We can trace the development of Darcy's feelings for Elizabeth in the tone of his voice. This reaches its climax in the scene in which he proposes to her. His negative persistence, beginning his speech with 'In vain have I struggled. It will not do,' becomes almost violent, in part because the novel itself is so restrained and Darcy is the most restrained of all the characters. Now, please listen carefully to that 'you.' Darcy seldom if ever addresses Elizabeth by her name, but he has a special way of saying 'you' when he addresses her a few times that makes the impersonal pronoun a term of ultimate intimacy. One should appreciate such nuances in a culture such as ours, where everyone is encouraged to demonstrate in the most exaggerated manner his love for the Imam and yet forbidden from any public articulation of private feelings, especially love.