In the passage Act 3, Scene 3, lines 438-445, Othello clearly expressed his split feelings regarding the accusation that his wife, Desdemona is cheating on him with Cassio. By stating “I think my wife be honest and think she is not” shown that Othello did not know whom to believe; he wanted to trust his wife but the accusations are too much for him to ignore without suspicion. Othello went on to vow to take vengeance on his wife and on Cassio if the right evidence were to come forth to him to finally set ‘free’ the truth behind the situation at hand. Othello went on to explain how Desdemona’s appearance is changing in front of his eyes; once he had found her to be so pure, fresh and clean. He compared the purity to that of “Dian’s visage” (act 3,sc 3, 442), which is the goddess of chastity.  However now with the accusations against her, his opinion of her changed into one that is of betrayal, her self-image now became corrupted and black in his mind, unable to change back to its pure state. Lago saw that his use of manipulation was working, so he continued to feed upon Othello’s vulnerability. Lago later introduced the missing strawberry colored handkerchief in the conversation as the last drive to push Othello over the edge and to ‘confirm’ his suspicions.