The problem of how to act righteously against moral wrongdoing when one's conscience is in doubt is suggested with Hamlet's character. Hamlet has to make a very important decision in Act I. First, he has to make a decision whether or not to go to the ghost when it beckons him. But, despite Horatio and Marcellus's thoughts, he goes with the ghost and talks with it. It is here that his need to make a decision comes about. The ghost tells him that his father was not bitten by a snake like he thought, but was really poisoned by his brother by pouring the poison in his ear. The ghost tells him that he must take revenge and kill Claudius, but leave his mother unharmed. Hamlet resolves to think of nothing besides avenging King Hamlet's unjust death. That is the most important decision that Hamlet has to make...