In the beginning of the plot, Lady Macbeth was the one who urged her husband to do all the killing. Macbeth was a bit wary about killing Duncan but Lady Macbeth said to him, "...that which hath made tham drunk hath made me bold, what has quench'd them hath given me fire..." She wants the deed done already but Macbeth knows that once the killing starts it will never end until Macbeth himself has gone.

After Duncan has been killed, Macbeth is feeling sorry that he has ever done such a thing but then again Lady Macbeth tells him off and he is worried about the blood on his hands, that theyw ill give him away. Lady Macbeth tells him not to be so silly, that a little water will wash us of this deed. Then she sees the daggers and asks him why he brought them back, she tells him to take tham back but he is afraid to look again on what he has done. "...I am afraid to think what I have done; Look on't again I dare not..." Lady Macbeth then does it for him.

All this time Lady Macbeth is acting rather like a man, and Macbeth is acting as if he is not a man.