Sachs: "I think Donald Trump is literally mentally ill to a very serious extent. "He is from a personality point of view a malignant narcissist I think is the right definition - or if you want a more classical diagnosis - a dark triad personality, which means that he is personally narcissistic. "He is Machiavellian, which means that in I think psychological terms that is manipulative, untrustworthy, deceitful and he is psychopathic meaning that there is no empathy for how many people he kills or how much damage is done. "The malignant narcissist definition adds paranoia and confabulation to this list. "So, I personally think we're dealing with a a psychologically deeply debilitated individual who happens to have a lot of power. "And according to one psychologist I was listening to yesterday that I thought made a lot of sense, there's an element of frontal-temporal dementia added to this that you see through the incoherence of the sentences, the drift of thought and even the confusion of words. So that the words don't even end as they begin. "