Has anyone read the novel The Strange Case of Dr. Jekyll and Mr. Hyde?

Brutus--What does it mean about Brutus that he so readily believes what Cassius says?

Cassius--What does it mean about Cassius's plan that he has to mislead Brutus to make it happen?

Antony--What does it mean about Antony that Brutus refuses to kill him?

I have an assignment on it due today and I really need the answers. Please help, no wrong answers.