At the end: Contrastingly, in act 4 scene one, Othello loses control over Iago’s manipulating tricks, and his mind fills with jealously and hatred against his wife and lieutenant. A drastic change in Othello's personality and language occurs as he becomes crude and impulsive. For example, Othello’s use of language reveals change when he refers to his wife saying, “she is a whore” and “Let her rot and perish and be damned tonight, for she shall not live”.