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:
This is the very painting of your fear; This is the air-drawn dagger which, you said, Led you to Duncan.
now they rise again |
With twenty mortal murders on their crowns,
describe it, and they echo what the murderer had said to him a little before,
Safe in a ditch he bides With twenty trenched gashes on his head.
Hence, horrible shadow! |
Unreal mockery, hence!
This is not quite so the first time, but then too its disappearance follows on his defying it:
Why what care I? If thou canst nod, speak too.
So, apparently, the dagger vanishes when he exclaims, 'There's no such thing!'
My strange and self-abuse |
Is the initiate fear that wants hard use.
I should attach no weight to (6) taken alone (see p. 140). Of (3) it may be remarked that Brutus himself seems to attribute the vanishing of Caesar's Ghost to his taking courage: 'now I have taken heart thou vanishest:' yet he certainly holds it to be real. It may also be remarked on (5) that Caesar's Ghost says nothing that Brutus' own forebodings might not have conjured up. And further it may be asked why, if the Ghost of Banquo was meant for an illusion, it was represented on the stage, as the stage-directions and Forman's account show it to have been.
On the whole, and with some doubt, I think that Shakespeare (1) meant the judicious to take the Ghost for an hallucination, but (2) knew that the bulk of the audience would take it for a reality. And I am more sure of (2) than of (1).