What ghost reflects in Hamlet’s Act I & Act III?


What is the difference between ghost in Hamlet’s Act one and ghost in Act three? Do they reflect his insanity?


In Act I of this play, the ghost is not visible to anyone around and no one could see it and it wants to take revenge for its murder from Claudius. However, in Act III, the same ghost appears and only Hamlet could see it and also tells Hamlet that he need not to be angry or rude with his mother and Claudius. This was the different between the ghost appeared in Act I and Act III. Probably, there was not any ghost, but Hamlet’s crazy way of turning into normal condition on his mother and concentrate on his real mission.