Lady Macbeth is the only reason Macbeth acts according to his strange sister's prophecies. Even before speaking to him, Lady Macbeth has sworn that her husband will take the king's place by killing his lord and kinsman. It is his decision for Macbeth to take power, not his, and his plans spell the end for Duncan. Lady Macbeth is in control from her first introduction; Macbeth himself is only a tool in his hands. Lady Macbeth feels she must take control, because her husband will never take the necessary steps. Macbeth is "too full of the milk of human kindness to take the nearest road (1.5.17-19)." Lady Macbeth knows her husband too well to imagine that he will readily agree to kill her king, so she makes the plans herself. While this doesn't justify Macbeth's actions - he killed the king anyway - it could justify his motives. When Macbeth is finally subjected to Lady Macbeth's care, her every word is aimed at convincing him to accept her plan: “Hello here. That I may pour out my spirit in your ear and chastise with the valor of my tongue all that prevents you from reaching the golden circle with which fate and metaphysical help seem to have crowned you. (1.5.26-31).” Lady Macbeth curses her husband for his kind and trustworthy nature, and ultimately manages to win him to her cause. Furthermore, Lady Macbeth is tormented by the same nightmares and