In Othello, the character of Iago is alienated from society by his personal values. He is used by Shakespeare to demonstrate societies assumptions and moral values on a whole. Iago is the main antagonist to Othello in this story, and he succeeds in his plan to ruin Othello by forcing him to believe that Desdemona is cheating on him. Because Iago succeeds, because he was able to carry off the plan, we are able to see exactly the assumptions on society that Shakespeare laid out to demonstrate. These assumptions and morals fall under three main categories: that people largely use each other, that we should do w