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‘He’s suffering from post traumatic

stress disorder.’

‘This trauma is something we

know about. In World War I they

called it battle fatigue, and it was

probably more horrific in

Macbeth’s days, when they were

killing with their bare hands, and

driving a blade through bodies.

'He’s having these hallucinations,

and he needs to return to the

violence to find some sort of

clarity, or peace.’