Diagnostic Misconceptions - Madness
English Lit: AQA GCSE Macbeth, topic 3.1.8

There are clear points in the play where Macbeth behaves irrationally. However, to say he just goes mad is an over-simplification. For example, when he is alone at Dunsinane, he speaks calmly and coherently about his age and increasing isolation: ’My way of life / Is fall’n into the sere, the yellow leaf’.
Test yourself on Diagnostic Misconceptions - Madness
At what point in the play do we see Macbeth thinking rationally and behaving calmly and coherently?
To say that Macbeth is mad throughout the whole play would be what?