Lady Macbeth
The letter, read alone by Lady Macbeth, reiterates the witches’ prophecy of Act 1. Significantly, in his letter, Macbeth says nothing of their prophecy to Banquo; perhaps he is already afraid of its implications. Equally significant, he sets up Lady Macbeth as his “Dearest partner of greatness.” She will indeed become his partner of in crime, but much more than that. Apart from the fatal itself, she will be responsible of controlling Macbeth’s passions and – to an extent-his actions. Immediately after she finishes the letter, Lady Macbeth’s mind goes to work. Her words shalt be uncannily reflecting those of the witches’ prophecy. At this point, Lady Macbeth herself has virtually become an agent of Fate, just like the weird sisters. But immediately her thoughts turn to possibly failings in her husband. He is “too full of the milk of human kindness” to commit murder; he would be great, he would have a high position, he would wrongly win that position, but in case, some other, aspects of his character would not. In this case, she says there is only one solution. She must “pour (her) spirits in thine ear”. The scene is rapidly becoming darker.
