"Really, I don't think you're behaving very well."- III.iv.93
"Come on. You know you'll never find a more capable man." - III.iv.87-88
"Bring me the handkerchief -My mind is full of doubt." -III.iv.86
"The handkerchief!" - III.iv.92
"Damn it!" -III.iv.94
"Keep working, poison! This is the way to trick gullible fools." - IV.i.42
"I wouldn't be trembling like this if I didn't know deep down this was all true. Noses, ears, lip. Is it possible? Tell me the truth- Handkerchief- Damn it! (he falls into a trance)"-IV.i.39-41
"I haven't done anything to deserve this!"- IV.i.233
"(striking her) You devil!"- IV.i.232
In the above scene, Othello is yelling angrily at Desdemona to give him the handkerchief that he gave her, and Desdemona believing this is a ploy to distract her from defending Cassio, refuses. This argument soon leaves Othello extremely frustrated, and he storms out. This is an external person vs. person conflict because Othello is having disputes with his wife to test where her loyalty lies though Desdemona is oblivious to this. It enhances the drama because Othello's unjustified anger towards Desdemona causes Emilia to tell her that perhaps jealousy is to blame for her husband's demeanor. Although Desdemona says that she never made him feel that way, readers can infer that now that she is exposed to this idea, there's a chance she will consider that this can be a reason, which might further hurt their relationship. This scene also helps to develop Desdemona's virtuous character. She honors her promise to Cassio that she will attempt to convince Othello to hire him back, and she clearly does in this scene, albeit pushing Othello to his limits. However, while this may convey Desdemona's trait, it also is what Othello needs to fully commit himself to the idea that his wife has indeed cheated on him as a result of Iago's monstrous plan, and therefore, advancing the plot.
In the above scene, Othello is shown to have become so angry at Desdemona for her sins as well as for losing the handkerchief, that he falls into a trance muttering to himself. This is an internal person vs. self conflict because in his mind, he doubts Desdemona's loyalty, but at the same time doesn't as he questions the possibility of Desdemona, a righteous lady doing something this scandalous, which becomes an ongoing battle internally. This conflict enhances the drama because his trauma demonstrates the lack of self confidence Othello has in his relationship. Even though Othello loves Desdemona and seems to know her very well, he gives her no credit when it comes to this, believing that she would ever do something as immoral as cheating. By making this quality a weakness of Othello's, it propels the plot because it allows Iago take advantage of it, which is the final push for Othello to decide to kill Desdemona. Additionally, Iago takes advantage of Othello's gullibility as well Othello's saying that anyone who looks honest is honest makes Othello naïve, which allows Iago to get to him easily and put Othello in this wrecked state. Together with Othello's trust and Iago's honest façade, Iago has the potential to make Othello conflicted with himself, which as seen above, he does.
In the above scene, Othello is seen to be slapping Desdemona while Lodovico, shocked at the Moor's behavior and Iago watch. This displays an external person vs. society conflict because Othello's reputation, which he has worked so hard to earn as he has always been conscious of the fact that he is a Moor, will now start to crumble. Like Lodovico, many will start to lose trust in him because of the way he acts due to his insecurities. This enhances the drama because readers now see a change in Othello. At the beginning, he was honorable and courteous, whereas now, where Iago's plan is almost at the end, Othello becomes impulsive, making rash decisions and letting his anger guide his actions, not caring how this would look like to others. Othello slapping Desdemona also propels the plot because now rather than trying to hide his disgust at his wife, he lets his true feelings out, demonstrating that Iago's revenge is succeeding. This event would also help readers understand just how powerful Iago's manipulation can be. Not only is he so adept at playing with people's mind and emotions that he is able to get Othello riled up to the point that he is willing to physically hurt Desdemona with others watching, he now has manipulated Lodovico into believing that Othello always acts poorly by the end of the, tarnishing his reputation once more.