Also brought to light is Iago's paranoia or insecurity. He provides us with a reason for his hatred of Othello saying .
'twixt my sheets, He's done my office'.
This declaration is completely unsubstantiated. Perhaps he is trying to convince himself of its truth to give him acceptable justification for his contempt. .
Iago is an acutely witted man and he clearly knows this. He believes himself to be intellectually superior to most others, however it could not be said that Iago loves himself. He simply accepts this self-conceived position. Accordingly, he is extremely quick to dismiss others, sarcastically labeling Cassio a proper man' and assuming that Othello .
will as tenderly be led by th' nose, As asses are'.
The soliloquy as a whole is testament to his ability to improvise swiftly. At the start of his soliloquy he has not yet decided how he is going to proceed with his revenge. A few lines later he has the outline of a workable and subtle plan.
The second soliloquy takes place at the end of act two scene one. The central characters are reunited on stage in Cyprus, after sailing through a storm. At the end of the scene we find Iago and Roderigo alone again. Iago seizes the opportunity to enlist Roderigo into his plan. He does not ask Roderigo for help, he plans to use him to do much of the work, convincing him that Cassio loves Desdemona and must be disgraced. When Roderigo leaves, the scene closes with Iago's soliloquy. This offers us further insight into his motives. The extent of Iago's hatred and contempt is suggested. It is weakness of his that he allows hatred to consume him in this way, using it as a driving force behind his action. He is also riddled with jealousy, saying again that he believes .
the lusty Moor, Hath leaped into my seat'.
he even goes as far to accuse Cassio.
I fear Cassio with my night cap too'.
These wild, unfounded accusations indicate that hatred and jealousy are clouding his much prided rationality and judgement.