“Flawed individuals will victimize you”: A top FBI profiler’s lessons on extreme narcissists like Trump

“… anyone who’s dealt with a narcissist knows you never, ever believe what they say — because they will say whatever the person they are talking to wants to hear. DT is a master at phrasing things vaguely enough that multiple listeners will be able to hear exactly what they want. It isn’t word salad; it’s overt deception, which is much more pernicious.”...
http://www.salon.com/2016/12/10/an-fbi-profiler-explains-trumps-narcissism_partner/