tleman. In scene IV King Duncan announces that his son, Malcom, will be his successor. receiving the title "Prince of Cumberland." This comes as a great shock to Macbeth, as he recognises this as an obstacle in his path to greatness. He acknowledges fearfully his 'black and deep desires.'
             By scene VI the viewer is made aware of the contents of Macbeth's letter to his wife, where he refers to her as his 'dearest partner of greatness.'2 Here, the viewer begins to gain an insight into the nature of their relationship. It is clear they share openly with each other their heart's desires and ambitions. There are no secrets. Macbeth's statement, ' my dearest partner in greatness,'3 shows their deeply loving and affectionate relationship. It displays how Lady Macbeth understands her husband's great ambitions and also his honorable character.
             In Act I Scene V, Macbeth's letter to his wife tells of the witches' prophecy, which is treated as a certainty.
             " ...I have learned by the perfectest report, they have more in them than mortal knowledge."4
             He writes to his wife "dearest partner in greatness"5 so "she mighst not lose the dues of rejoicing."6 He believes she has a right to rejoice her future as Queen. Lady Macbeth, however, does not rejoice. It is discovered by the viewer at this stage that Lady Macbeth is even more ambitious than her husband. She knows his sense of honor will stand in the way of him accomplishing the murder plan.
             It is too full o' the milk of human kindness
             ...