Othello seems to be a man who knows who and what he believes in, but his flaw outweighs the trust he places so strongly in the individuals around him. Since the beginning of Iago's career alongside Othello, he has slowly gained Othello's trust and friendship. Othello trusts him blindly because of the outward appearance of Iago's nature. Slowly, Iago begins to sow doubt in Othello's mind, but he advises him to "beware, my lord, of jealousy!" It’s the green-eyed monster who doesn’t care about the meat he eats” (QUOTE). Iago falsely gives Othello confidence that everything could be a lie in order to further gain his trust as honest Iago. Additionally, Iago holds back his lies in order to make Othello believe that he is also trying to be a good friend to Cassio by keeping this a secret from Othello. The way Othello begins to trust Iago so much is his fault. Iago uses Othello's lies extensively throughout the fourth act through a series of lies that he performs. These lies are not only the end of Othello, Desdemona and other characters, but the end of Iago as a character.