Iago gets Othello to fill in the blanks by having hyphens in his speech it shows that he wants to let Othello’s mind run and think of the worst, something that can’t be said
When Othello asks what Iago means, Iago replies “You cannot, if my heart were in your hand,// Nor shall not, while ’tis in my custody.”
By being reluctant to tell him it makes it seem like serious news
Iago comes off as self-effacing making him seem humble and establishing morality
Iago also implies that because “she did deceive her father, marrying you [Othello]” that she is capable of deceiving him
“Not to affect many proposed matches” makes it seem like Desdemona is weird for not choosing other matches that seemed more appropriate
Implies that she will do what ever she wants to benefit herself
Lust not love
When Iago gets the handkerchief from Emilia he forms a plan to make it seem as though Cassio received it from Desdemona
He knows that Othello is changing, “The Moor already changes with my poison”
This shows that he knows he’s manipulative and doesn’t care about the consequences as long as it benefits himself
Later in the scene Othello begins to start feeling like he’s being tortured, he feels as though his old self has been killed and his language changes when talking about Desdemona calling her a “whore”
Iago claims to have heard Cassio in his sleep dreaming of “sweet Desdemona”]
When Othello gets angry he states “Nay, this was just his dream” to try and detach himself from Othello’s emotions and not be the cause