This however is due more to a weakness in his will than in his intellect. Hamlet ironically seeks the good in a way that will never lead to it. The brilliant futility of the sick at heart is Hamlet. Hamlet is a tragedy of a soul stripped and trapped in a world which it cannot escape or understand. It is impossible to seek the answer outside the play itself.
Modern psychology is of no help.
It allows others to speak freely in his presence for their guard will be down. Thus the words of the ghost may be confirmed. See I,v,169 ff. The king is too clever, and the queen is not an accomplice. Hamlet's speech upon seeing the king at prayer is offensive and not heroic.