Othello is willing to extend faith and trust to Iago, and Othello mistakenly believes that Iago loves him. Othello's crime is not trusting his wife and trusting a dishonest character. When Iago says to Othello “Did you perceive how he laughed at his vice?” (4.1.137). Iago tells Othello that Cassio laughs when he admits that he slept with Desdemona. Othello thinks this is true because Othello trusts Iago, but it would have been possible for Othello to think that Cassio was lying to Iago. Othello speaking with Iago decides that he will kill Desdemona with poison, but changes his mind and decides to kill her by strangling her in bed at Iago's suggestion. After Othello discovers that he has been tricked by Iago into killing his faithful and loving wife, he says, "Be careful, a word or two before you go. I have done some service to the state, and they know it. Nothing more." Please, in your letters, when you relate these unfortunate actions, speak of me as I am. Nothing attenuates, nor diminishes anything with malice. Then you must be talking about someone who didn't love wisely, but too well. Of someone who is not easily jealous, but who is tormented, perplexed in the extreme. Of one whose hand, like the vile Indian, threw away a pearl richer than all his tribe. Of one whose eyes are subdued, even if not accustomed to dissolution