100
In this passage, Macbeth is totally spooked out by Banquo's ghost, who is really just a hallucination, and is not real. Macbeth is mentally ill with his recent acts of evil.
What is MACBETH: Here had we now our country’s honor roofed,
Were the graced person of our Banquo present,
Who may I rather challenge for unkindness
Than pity for mischance.
ROSS: His absence, sir,
Lays blame upon his promise. Please ’t your highness
To grace us with your royal company?
MACBETH: The table’s full.
LENNOX: Here is a place reserved, sir.
MACBETH: Where?
LENNOX: Here, my good lord. What is ’t that moves your highness?
MACBETH: Which of you have done this?
LORDS: What, my good lord?
MACBETH: (to GHOST) Thou canst not say I did it. Never shake
Thy gory locks at me.
(Macbeth, 3.4.40-51)