macbeth: “The Castle of Macduff I will surprise ... give to th’ edge o’th’sword his wife, his babes and all unfortunate souls”
shows his dehumanization and loss of empathy
This act marks a significant point in Macbeth’s moral decline
Macbeth’s decision to kill Macduff’s family is driven by fear and paranoia. He is terrified of losing his power and will go to any lengths to prevent this
The play deals with the transfer of power and the transformation it brings along with it in the agents of such transfer
We see three consecutive powerholders i.e. Duncan, Macbeth, and Malcolm
The plot evolves from the power in a stable individual to it being claimed by an ambitious person whose personal quality doesn't match the power which it seeks so much