I don't think he's insane but I do think he's highly likely to be a psychopath
1 in 100 men. That's really a lot. It would be surprising if a significant number of male politicians weren't.
Newt:
Callous disregard for others? Check.
Grandiosity? Check.
Pathologic egocentricity fuelled by a deep-seated inferiority complex? Check.
Malignant narcissism? Check
Untruthfulness and insincerity? Check.
Conflicted self-identity? Check.
Impulsiveness? Check
Often vengeful, spiteful? Check.
Morally ambivalent, shallow, ethically
newtered? Check
Easy irritability, quick to aggression? Check
Delight in deception? Check
A person of many (volte) faces? Check.
Opportunistic chameleon who colours according to his prey? Check
Friendless gimposity? Check.
According to my liberal reading of the DSM-V, an affirmative to four or more of the above means that the repondent is (in diagnostic jargon): "a proper cnut best avoided". An affirmative to all yields: "Congrats, contact the GOP, your tricky dickery makes you a perfect Nixon Republican- but don't tell anyone just yet, bide your time."