"Come, you spirits that tend on mortal thoughts, unsex me here, and fill me from the 2 crown to the toe top full of direst cruelty." (Act 1 Scene 5 Line 39-41) Her speech to the demons is both powerful and sinful. "She isn't sure there's enough manhood to go around between herself and her husband, so she calls upon scheming spirits to "unsex me here." (http://www.enotes.com/ shakespeare-quotes/unsex-me-here) It was the perfect example of just low she intended to go to be crowned as queen. " "Compunctious visitings of nature" are the messages of our natural human conscience, which tell us that we should treat others with kindness and consideration. Lady Macbeth wants to be unnatural, so that she can be "fell," deadly." (http://www.shakespearenavigators.com/macbeth/Nature.html) Try un-compunctious. She wants to be rid of anything human-like or womanly or "too full o' th'milk of human kindness" (Act 1Scene 5 Line 16) so she could help commit something that starts the circle of death. "The devilish wife of Macbeth, whose ambition helps drive her husband toward the desperate act of murder." (CliffNotes Hardbound Literary Libraries: Shakespeare's Macbeth Page 12) Although she was not the one to actually commit the murder of King Duncan, she held the string that controlled the puppet that did. "Look like th' innocent flower, but be the serpent under't." (Act 1 Scent 5 Line 63-4) Her words were the reason the homicide took place and that act created a serial killer. He tried to back out but was scorned by her because she thought he was being cowardly. "We will proceed no further in this business. He hath honored me of late." (Act 1 Scene 6 Line 31-2)"Wouldst thou have that which thou esteem'st the ornament of life, and live a coward in thine own esteem, letting "I dare not" wait upon "I would," like the poor cat I'th' adage?' (Act 1 Scene 7 Line 41-5) She uses words to hurt and forces him into actions he would otherwise not even attempt.
