In Shakespeare's play, Macbeth, the appearance of Banquo's ghost plays an important role. But it also leaves us to wonder if it is a sign of Macbeth's failing sanity, or an actual apparition appearing to frighten Macbeth. Closer examination shows evidence that this is indeed a figment of Macbeth's imagination. First, it is not the first, but the third, or arguably, the fourth time Macbeth has seen or heard was isn't there. His wife too, will have struggles along the same lines. In addition, it can be argued and demonstrated the Macbeth had lost his sanity before this point. And in a broader view, we see that the ghost of Banquo is treated much differently than ghosts used in Shakespeare's other works are.

Banquo's ghost appears in act 3 scene 4 of the play. It comes and leaves a couple times. It sits in Macbeth's seat, yet his comrades call...