Notes on Hamlet

Act 3 of Hamlet opened up a very interesting question to me, particularly about the ghost of Hamlet's deceased father. Up until now all of the characters were able to see the ghost, that had viewed it. Now suddenly Hamlet's mother can't view the ghost. As the play is written the ghost is definitely an entity, and appears to guide Hamlet. However, Hamlet and his mother are the only two present when his ghost comes along the second time. This could mean one of two different things. Either the queen's wrongdoings and getting with Claudius have blinded her to only see what she really wants to view, or that Hamlet have fallen so deeply into anguish that he is justifying his heinous actions by creating the entity in his own mind. Just something to note going on into the story.