To be insane or not to be insane; that is the question. In Act IV Scene II, Hamlet appears to go insane after Polonius's death. There are indications, though, that persuade me to think otherwise. Certainly Hamlet has plenty of reasons to be insane at this point. His day has been hectic; he was finally determined that Claudius had killed his father, the chance to kill Claudius confronted him, he comes very close to convincing Gertrude that Claudius killed his father, he accidentally kills Polonius thinking it's Claudius, and his father's ghost visits him once again. These situations are enough to bring Hamlet to insanity, but he remains sharp and credible. Hamlet can make smart remarks to Rosencrantz and Guildenstern, comparing them to sponges. "When he (Claudius) needs what you have gleaned, it is but squeezing you and, sponge, you shall be dry again," (pg. 98, line 20). This is random and unexpected, as many of his other actions, but the comparison makes sense. Rosencrantz and Guildenstern soak up all the Kings favors, only to become dry again after they mop up the King's mess, spying on Hamlet and finding Polonius's body.
             Later, with Claudius, Hamlet tells how modest a king can be by saying, "A man (beggar) may fish with the worm that hath eats of a king, and eat of the fish that hath fed of that worm," (pg. 99, line 29). This also makes sense and is not quite as random. When Hamlet confronts Claudius, and the King asks where Polonius is, Hamlet immediately begins the comparison by telling Claudius that Polonius is at supper (the worms are eating him for supper, and so on). This proves that Hamlet had some planning for this degrading comment and that his thoughts are not scattered, and he can stay focused.
             There is a question of what insanity is. Since it is agreeable that Ophelia was crazy, it's possible to use her as a guide to make this argument valid. Hamlet and Ophelia both shared the trait of having cal...