Psychopaths feel literally nothing when it comes to violence or fear. Levy's studies show that the emotional sectors of the brain are damaged. This makes them dangerous. They can't see that something hurts or that they are hurting someone. In light of various descriptions of an unstable person, Iago is a psychopath with his manipulative choice of words. He tells people things they want to hear and says it in a way that makes him sound great. "I humbly ask your forgiveness, for loving you too much." (3.3.106) In the third act, Iago pretends to be Othello's confidante and wants Othello to suspect that his wife is having an affair. Iago has a pseudo relationship with Othello throughout the play. Iago tells Roderigo that he can make Desdemona fall in love with him by paying a "small fee". Iago used Roderigo to make money. Iago also told Roderigo that Cassio was talking to Desdemona. Roderigo did not approve and Iago convinced him to fight Cassio. Cassio ended up losing his "good reputation" and his position as lieutenant in the clash with Roderigo. Iago became Lieutenant, just as he had before