In a world where the future of this country is threatened from within by increasingly angry polarization, and where external threats can become nuclear, are we really going to entrust the safety or this country to a man who still needs to grow up?

Is the fact that he loudly expressed our own disgust with the political establishment a sufficient reason to gamble the whole future of the country by putting him in the White House?

The White House is not a place for on-the-job training. You are supposed to be ready, or at the very least grown up, before you walk in the door. Aging happens automatically, but maturity is optional — and it is an option that Donald Trump has not yet chosen to exercise.

The issue that Trump raised about Ted Cruz’s having been born in Canada is not the first time he has tried to challenge where someone was born. “The Donald” was among those who tried to say that Barack Obama was not born an American citizen, and who disgraced themselves, while undermining other critics of Obama who had serious objections to his policies.

On the other hand, messianic demagogues have often spoken at least part of the truth. But they have also often led their followers to their doom, whether at Jonestown, Stalingrad, or innumerable other places. That is a very high price to pay for an exhilaration of the moment.