the first bit in the link inside which i left inside is a layman's opinion ..
I'm willing to wager that most, not all, but most people who have listened to Donald Trump talk, and probably scores of psychologists and psychiatrists (sans Dr. Phil), might come to the conclusion that, strictly and clinically speaking, he's a narcissist and quite clearly an unscrupulous megalomaniac that would sell his soul to the highest bidder (perhaps he already has, you never know).