Cowardliness extricates the flames of Insanity

Hamlet cannot be a coward and insane at the same time. The definition of Insane "a derangement of the mind, such unsoundness of mind as frees one from legal responsibility, as for committing a crime, or as signals one's lock of legal capacity." Clearly says a "derangement of the mind", "committing a crime", "Legal capacity". Hamlet knows himself he is a coward and he is unable to commit the ordered vengeance his father asked of him. Hamlet makes many remarks of his Cowardliness. "Am i a coward?" (Act 2.2, 552-584) proving Hamlet is being afraid to act. Hamlet also says "What an ass i am" and Ironically proclaiming "I'm so damn brave" (Act 2.2, 583) Which means he is clearly evaluating the destruction of the vengeance and is lacking the physical and mental courage to kill the king. "A thought which, quartered, hath but one part wisdom and ever three parts coward". (Act 4.4, 44-45)