Very fortunately for Trump, a large number of his supporters validate him because they are hypersensitive to sleights against their own status and position in society right now. They’re Christians under attack from secularists; Americans under attack from Muslims; conservatives under attack from their leadership in Congress; white people under attack from minorities; middle class people under attack from poor people who are slurping up government services at their expense. Like Richard Nixon’s “bundle of resentments,” (Rick Perlstein’s phrase) Trump’s bundle of insecurities serve the interests of his potential voters right now.

These are just the macronutrients in Trump’s brew. His penchant for insults — particularly physical insults — is not something that secure people do. Even mean, secure people do not gratuitously insult someone’s appearance because they disagree with them. Mean, insecure people do because they instinctively know how powerful those insults can be, and how they can deflect attention from the flaws of the person who makes them…

Donald Trump is just not very comfortable with being Donald Trump. His insecurity is not universal; he does not seem to be terribly obsessed with his hair, or his looks; he doesn’t seem to care about being labeled a bigot or a racist. What he cares about is being seen as smart enough, as someone who worked hard to make it where he has made it.