extremes of behaviour

A talented communicator, but given to extremes of behaviour.

Oscillating between wild extremes of behaviour is interesting, but ill-advised and unnecessary.

'On the face of it, from the information that your man Mackie gave us, we think he's probably a psychopathic personality with two extremes of behaviour, huge energy or total depressive introspection.

All comes from the Bible, which is offered to them as proof of the truth of what they are told, and gives them the impression that both extremes of behaviour are correct and righteous.

There is a generally accepted view that people 'going under' anaesthetic do display extremes of behaviour - but here it was viewed automatically as sexual, as if the expectations of the doctors did not allow for anything else.