LADY MACBETH: My royal lord, you do not entertain your guests. You must assure them that they are welcome—otherwise, they'll feel as if they've paid for this feast.
If they simply wanted to eat, they would have done so at home. Away from home, they need some ceremony to flavor their dishes. Meals are plain without it.
MACBETH: Thank you for the reminder, my sweet. I wish you all good health, good appetite, and good digestion!
LENNOX: Why don't you have a seat, your highness?