"Or to be naked with her friend in bed An hour or more, not meaning any harm?"
"Naked in bed, Iago, and not mean harm! It is hypocrisy against the devil. They that mean virtuously, and yet do so, The devil their virtue tempts, and they tempt heaven."
"Let the devil and his dam haunt you! What did you mean by that same handkerchief you gave me even now? I was a fine fool to take it."
"How now, my sweet Bianca! How now, how now?"
"By heaven, that should be my handkerchief!"
"Do it not with poison. Strangle her in her bed, even the bed she hath contaminated."
"Good, good, the justice of it pleases! Very good!"
Iago starts saying how Desdemona and Cassio have kissed. Then he goes on to say that they have slept together. Also, he says that Cassio probably has Othello's handkerchief. Othello is extremely mad.
"My lord, this would not be believed in Venice, Though I should swear I saw ’t. 'Tis very much. Make her amends, she weeps."
"Oh, devil, devil! If that the earth could teem with woman’s tears, Each drop she falls would prove a crocodile. Out of my sight!"
"I will not stay to offend you."
Cassio comes to talk to Iago. Othello is in hiding. Soon after Cassio walks in, Bianca is not to far behind. She has questions about the handkerchief. She says Cassio has given it to her. Othello notices that is was his handkerchief.
"He called her “whore.” A beggar in his drink Could not have laid such terms upon his callet."
"Why did he so?"
"I do not know. I am sure I am none such."
Othello is so done with his wife and Cassio that he is planning to kill them.
"Will you hear me, Roderigo?"
"I have heard too much, and your words and performances are no kin together."
Othello and Desdemona get in a fight in front of Lodovico. He is saying all this stuff about her in front of Lodovico. He says he wants Desdemona to leave.
First, Othello asks Emilia if Desdemona did anything with Cassio and she says no. Then he gets in an argument with Othello. Desdemona tries to tell Iago and Emilia what he called her and Iago tells her that he is going through really bad work problems.
Roderigo is really mad at Iago. He gave him jewels to give to Desdemona and has never gotten anything in return. He says if she does not return them then he will challenge Iago to a duel. Iago also says the only way for them to get Desdemona to stay is to get rid of Cassio.