Come, you spirits
That tend on mortal thoughts, unsex me here,
And fill me from the crown to the toe top-full
Of direst cruelty! make thick my blood;
Act I Scene 3-Lady Macbeth
Summary: Lady Macbeth says that the spirits
should give her everything to be queen. She wants to have cruelty
and thick blood.
Comment: In this case, "Blood" means "force". The idea with using the term blood means that you can force spirits to work for the ruler.
Will it not be received,
When we have mark'd with blood those sleepy two
Of his own chamber and used their very daggers,
That they have done't?
Act I Scene 7-Macbeth
Summary: Macbeth believes that if he and his wife (Lady Macbeth) wipe blood on Duncan's guards, then people will believe that the guards are the ones responsible for murder.
Comment: In this case, "Blood" means "sin". The thought that you can "smear" someone with blood means that you can entrust guilt to people.
But in these cases
We still have judgment here; that we but teach
Bloody instructions, which, being taught, return
To plague the inventor: this even-handed justice
Commends the ingredients of our poison'd chalice
To our own lips. He's here in double trust;
First, as I am his kinsman and his subject,
Strong both against the deed; then, as his host,
Who should against his murderer shut the door,
Not bear the knife myself.
Act I Scene 7-Macbeth
Summary: Macbeth plans on killing the inventor by poisoning him and then stabbing him. Using bloody instructions means that his instructions will be successful when he uses it.
Comment: In this case, "Blood" means "job". The thought about Macbeth using instructions to kill the inventor is one very good idea. Killing the inventor to Macbeth is a good thing. Since he is his kinship, doing so would not be easy.
