Iago's jealousy has made him unreasonable and nonsensical. Iago believes that Cassio is unfit for lieutenant because he is “a Florentine, A fellow almost damned in a fair wife, That never set a squadron in the field, Nor the division of a battle knows More than a spinster” (I. i. 21-25). Iago feels Cassio is not worthy of lieutenant and doesn't understand the Intricacies of battle and Iago shows his jealousy for Cassio when he believes he should have been chosen. In …show more content…
Iago tells Roderigo that “when [Desdemona] is sated with his body she will find the {error} of her choice. Therefore, put money in they purse.” (I. iii. 393-395). Roderigo is jealous that Desdemona is with Othello so Iago uses his jealousy to manipulate him by telling him that she soon leave him for someone younger and richer and tells Roderigo to get rich when Iago only wants him to get rich so he can take his money from him. Iago thinks to himself in his Soliloquy “whether [Roderigo] kills Cassio, or Cassio him, or each does kill the other, Every way makes my gain.” (V. i. 13-15). Iago is talking about how it doesn't matter, to Iago, whether Cassio or Roderigo die's because he has taken everything from Roderigo and used him as a pawn since the start and he was ordered to kill Cassio. Because of Roderigo's love for Desdemona that if he kills Cassio, then Desdemona will stay in Cyprus and he can win her over even though Roderigo says “I have no great devotion to the deed” (V. i. 9). Even though Roderigo doesn't have to kill Cassio he still tries to anyway because he believes that Desdemona will stay if he does, this shows how easily he’s manipulated from Iago using his