"A few vices are sufficient to darken many virtues," Plutarch observed. Once someone figures out what your chief weakness is, that person can exploit it. Unfortunately for Cassio, Iago has discovered his vice. While Cassio isn't Iago's primary target, he is a most necessary liaison to the person who is: Othello. Iago will have revenge for the wrongs he feels have been done him, and if innocents must be used, so be it. For Iago, the ends justify the means. Be sure you understand Iago's motivations by taking our exclusive, interactive quiz to Act 2, Scene 2 of Othello. Each of our questions is ranked so that you can understand the level of difficulty and see how your score compares with others who have also taken this quiz. Give it a try!