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 not follow that he knew he was repeating them; or that, if he did, he remembered the sense they had previously borne; or that, if he did remember it, he might not use them now in another sense.

 

I do not think the suggestions that the Ghost on its first appearance is Banquo’s, and on its second Duncan’s, or vice versâ, are worth discussion. But the question whether Shakespeare meant the Ghost to be real or a mere hallucination, has some interest, and I have not seen it fully examined.

The following reasons may be given for the hallucination view:

(1) We remember that Macbeth has already seen one hallucination, that of the dagger; and if we failed to remember it Lady Macbeth would remind us of it here:

(2) The Ghost seems to be created by Macbeth’s imagination; for his words,

