But the president still wasn’t done. “Here’s the bottom line,” he said. “I’ve been very unfairly treated, and I don’t say that as paranoid. I’ve been very—everybody says it. It’s going to be interesting to see what happens. But there was tremendous evidence right now as to how unfairly treated I was. President Obama and Biden spied on my campaign. It’s never happened in history. If it were the other way around, the people would be in jail for 50 years right now.”

Just in case his bitterness wasn’t coming through clearly enough, the president added this: “That would be Comey, that would be Brennan, that would be all of this—the two lovers, Strzok and Page, they would be in jail now for many, many years. They would be in jail; it would’ve started two years ago, and they’d be there for 50 years. The fact is, they illegally spied on my campaign. Let’s see what happens. Despite that, I did more than any president in history in the first three and a half years.”

With that, the interview ended.

Such a disposition in almost anyone else—a teacher, a tax accountant, a CEO, a cab driver, a reality-television star—would be unfortunate enough. After all, people who obsess about being wronged are just plain unpleasant to be around: perpetually ungrateful, short-tempered, self-absorbed, never at peace, never at rest.

But Donald Trump isn’t a teacher, a tax accountant, or (any longer) a reality-television star; he is, by virtue of the office he holds, in possession of unmatched power. The fact that he is devoid of any moral sensibilities or admirable human qualities—self-discipline, compassion, empathy, responsibility, courage, honesty, loyalty, prudence, temperance, a desire for justice—means he has no internal moral check; the question Is this the right thing to do? never enters his mind. As a result, he not only nurses his grievances; he acts on them. He lives to exact revenge, to watch his opponents suffer, to inflict pain on those who don’t bend before him. Even former war heroes who have died can’t escape his wrath.

So Donald Trump is a vindictive man who also happens to be commander in chief and head of the executive branch, which includes the Justice Department, and there is no one around the president who will stand up to him. He has surrounded himself with lapdogs.

But the problem doesn’t end there. In a single term, Trump has reshaped the Republican Party through and through, and his dispositional imprint on the GOP is as great as any in modern history, including Ronald Reagan’s.

I say that as a person who was deeply shaped by Reagan and his presidency. My first job in government was working for the Reagan administration, when I was in my 20s. The conservative movement in the 1980s, although hardly flawless, was intellectually serious and politically optimistic. And Reagan himself was a man of personal decency, grace, and class. While often the target of nasty attacks, he maintained a remarkably charitable view of his political adversaries. “Remember, we have no enemies, only opponents,” the former Indiana governor Mitch Daniels, who worked for Reagan, quotes him as admonishing his staff.