Many critics of the play believe that from the first scene to the last, Macbeth's character is unchanging, and that he is always governed by his greed, selfishness and evil. This is not so. Right from the outset of the story, Macbeth's indecisiveness is evident. In act I, Macbeth struggles a great deal in deciding whether or not to murder the king and take his throne. When Macbeth is first given the prophecy that he will be king, he dreads the thought of killing a man that has been like a father to him. This shows that Macbeth has a conscience, and that deep down inside, he is a good person. When he arrives home to his kingdom though, he is greeted by Lady Macbeth who reveals her plan to make her husband King when she says:
"I will pour my spirits into thine ear,
And chastise with the valor of my tongue
All that impedes thee from the golden round."
(Iv, 24 - 26)
Macbeth's conscience tries to fight the constant attacks by his wife who insists that he should kill the king. Finally, Macbeth decides his fate, listens to the poisoned words of his wife and kills Duncan.
Immediately after the death of Duncan, Macbeth is completely overcome by guilt. For the moment, he forgets about the now empty throne, and can't comprehend what or why he has done what he has done. When Lady Macbeth realizes that in a state of confusion he has forgotten to remove the daggers from the King's room, she tells him to go back and get them. He replies by saying "I'll go no more./ I am afraid to think what I have done. / Look on't again, I dare not" (II