“ O beware, my lord, of jealousy, it is the green-eyed monster which doth mock the meat it feeds on ( William Shakespeare)”. Roderigo is jealous of Othello because he is married to Desdemona and he is envious of Othello for that and Iago is jealous of Cassio because Othello had passed him for a position and gave it to Cassio who has no experience in the battlefield like Iago does. Iago wants to seek revenge on Othello and Cassio, Othello because he gave the promotion to Cassio instead of him and Cassio because he took the position. Roderigo wants revenge on Othello because he had the girl that he wants, Desdemona. Jealousy is like a wave it comes and goes, there could be a surge of emotions like anger, envy , sadness, and sometimes resentment. Iago convinces Othello that his wife, Desdemona, has been unfaithful to him. Iago uses jealousy against Othello, yet jealousy is the source of iago’s hatred in the first place. In Othello, William Shakespeare, created probably the most evil person in all of literature, Iago. Iago wanted revenge on Othello because he was jealous , Cassio had a wild dream about Desdemona,and he knew about the handkerchief that had meaning to Othello. Out of revenge, Iago successfully planted the seeds of jealousy into Othello’s mind when in the garden Iago insinuated that Cassio and Desdemona were having an affair, when Iago lied to Othello about Cassio’s so called wild dream, and when Iago had his wife Emilia steal the strawberry embroidered