Othello - Act 2.3

"`Tis pity of him./I fear the trust Othello puts him in,/On some odd time of his infirmity,/Will shake this island" (Iago 2.3.121-124).

Either the man Iago is talking to is extremely dumb & gullible or Iago is the sheistiest person. I'd say he is a pretty sheisty con artist & I respect him for his asset, as immoral as that sounds. He's already been able to convince Roderigo that Desdemona and Cassio are more than friends and now he convinces Montano that Cassio is suffering from a weakness for alcohol which will cause a casualty. His ability to mislead people is admirable; it's almost as if every character are his puppets. It shows that Iago is meticulous with his choice of words and when he chooses to execute his plots. His persuasiveness is foreshadowing, because when he falsely tells Othello about Desdemona and Cassio's affair he will succeed. In the end, it will only bring more drama.

Roderigo is hopeful that Iago will set him up with Desdemona but is Iago's only objective to corrupt Othello?

infirmity: physical or moral weakness (2.3.123).
knave: an unprincipled, untrustworthy or dishonest person (2.3.144).
peevish: as from vexation or discontent (2.3.183).