Point: False truths allow jealousy to corrupt and destroy Othello, which leads to him questioning the validity of his relationships.Proof: Before Iago tells Othello about how he suspects there may be something going on between Cassio and Desdemona, he says, ” O, beware, my lord, of jealousy!/ It is the green-eyed monster which doth mock/ The meat it feeds on” (3.3.195-197)Explain: This quote demonstrates that Iago is aware of the power of jealousy and how it can destroy people who fall victim to it and this is exactly why he targets this weakness of Othello’s in his plan to enact revenge. When Iago first mentions a possible infidelity between Cassio and Desdemona, Othello starts to question his love with Desdemona and friendship with Cassio. Although Desdemona and Cassio have been nothing but faithful and loyal to Othello, a simple false truth told by Iago was enough to raise Othello’s suspicion. Although at first he is rational and seeks ocular proof, through Iago’s manipulation of Othello’s jealous nature, he is convinced without ever receiving ocular proof. When Iago first mentions an infidelity, Othello can not believe Desdemona would do such a thing and says things such as she had eyes and had chose me.At this point, he can see that Desdemona’s love is pure and faithful. However, as Iago continues to tell this false truth and work on Othello’s jealousy, the jealousy takes over Othello and prevents him from seeing Desdemona’s faithfulness. The mere idea of Cassio and Desdemona having an affair arouses his jealousy and clouds his rational thought. He never takes the time to think through what Iago has told him. If he would have just used his logical thought, he would have realized that a man that helped him woo and marry his wife would not likely have an infidelity with her. His jealousy overrules his logic, which prevents him from having the rational decision of communicating with Desdemona or Cassio to find out if what Iago told him has merit. Ultimately, it is Othello himself and his jealousy that ruins his relationships as he kills his wife and orders Iago to kill his best friend.