In Macbeth, it is clear from the outset who Macbeth's "Partner of Greatness" (I.v.9) is. Macbeth's conflict causes indecision in him and he has already realized that it "cannot be ill; cannot be good"(I.iv.131) when he contemplates what the witches have said. Macbeth writes to Lady Macbeth setting out what the witches have said and that he will be king. Lady Macbeth's own ambition is so strong and although she accepts what Macbeth has told her, "yet I do fear thy nature...is too full of the milk of human kindness"(I.v.13-14) and he may not be able to achieve the position of king in what she perceives to be the easiest or "nearest"(15) way. Accordingly, Lady Macbeth steels herself for action.
Lady Macbeth has recognized the opportunity to advance Macbeth's career and she can see "the future in the instant." (54) She does feel that Macbeth is not taking advantage of the situation and even resembles "the innocent flower."(62) She therefore tells Macbeth to "leave all the rest to me."(70) She will persuade him, after he almost decides against killing Duncan, by questioning his manhood and by convincing him that her plan is solid. After his confusion when he brings the daggers with him, she consoles him as "A little water clears us of this deed."(II.ii.67)