George W. Bush has shown himself to be a decent guy, not exploiting his former office to make top dollars giving speeches.

President Obama ran a campaign in 2008 that was entirely expected from a non-incumbent. You promise, and you imply that if you elect me, everything good is going to happen.

If the incumbent or his party has been discredited sufficiently, the challenger can run a successful, content-free campaign.

If you put on the military uniform, you're a prima facie hero. Generals are the epitome of that. They're the ones who have been most successful at the soldier's trade.

The shelf life of a seventh-year State of the Union address is about five minutes. Presidents can propose stuff. They're probably not likely to get it done.

I cannot think of a president or administration that has taken seriously the 100 days.

In modern times, the American military has become more bureaucratised.

In some ways, I would be absolutely fascinated if Trump gets elected.

Every work of history is a combination of argument and narrative. The longer I write, the more I emphasize the narrative, the story, and the less attention I give to the argument. Arguments come and go.

I'm more inclined to say the presidency has changed Trump rather than Trump changed the presidency. He has moderated or reversed himself on most of the positions he took as a candidate. Reality has set in, as it does with every new president.

Once you become president, you don't even have to stop for red lights. And if it looks like traffic's too bad, you just take a helicopter.

The president is the one person who potentially could be the unifying figure in the country. And if the president or a presidential candidate basically writes off 40 states, then how in the world do the people in those 40 states feel like they have a stake in that person or that election?

When you're actually president, the spin matters a lot less.

Booker Washington was branded an accommodationist by many of the people who criticized him.

America can change its presidents, but the world doesn't change.

Members of Congress are somewhat reluctant to tangle with a president who seems to have the backing of the American people.

Presidents have to decide what their popularity is for. Lyndon Johnson probably understood best that political popularity is a wasting asset. You had to use it when you had it.

I had this grand plan for writing the history of the United States in six volumes. This was in the mid-1990s; I was fairly young and very ambitious. I pitched it to a publisher, who just laughed at me.

Reagan's enduring value as a conservative icon stems from his resolute preaching of the conservative gospel, in words that still warm the hearts of the most zealous conservatives. Yet Reagan's value as a conservative model must begin with recognition of his flexibility in the pursuit of his conservative goals.

I'm often asked, 'Why didn't Benjamin Franklin ever become president?' My short, easy answer is: He died.

He used humor more effectively than any president since Abraham Lincoln. Reagan was not an especially warm person, but he appeared to be. Many people disliked his policies, but almost no one disliked him.

I've probably written some books - I know I've written some books that were more interesting to me than to a large audience, but that was mostly when I was first getting started in academia and writing for a narrow audience.

There is a certain kind of sobering, civilizing effect that being president imposes on people. There is a certain kind of dignity with which you comport yourself. As an observer of the presidency, I have to wonder if Trump would follow that pattern.

Presidents are evaluated not by what they did by the stroke of their own pen; it's what they persuade Congress to do.

The more of my readers I encounter who say, often apologetically, that they are actually listeners, the more I write for the ear rather than the eye. Small things like identifying speakers in dialogue rather than relying on paragraphing to mark the shifts.

Booker Washington was essentially the head Republican boss in the South. He was a power broker.

I certainly don't think that the heirs of the American Revolution were a particularly noble class.

Although this should not be so, historians reconsider presidencies based on how the presidents conduct themselves after leaving office.

Reagan refused to demonize his foes. Instead he charmed them, with a few exceptions, including Tip O'Neill, the Democratic Speaker of the House and the embodiment of the liberalism Reagan sought to reverse.

It wasn't the smiling Trump that people elected. It was the frowning, glowering, angry Donald Trump that people elected.

With my students, I always have to sell my subject because I know when you're 19, 20 years old, you've got other things on your mind besides American history. What I have to do is make this as compelling as possible.

There has always been interest in certain phases and aspects of history - military history is a perennial bestseller, the Civil War, that sort of thing. But I think that there is a lot of interest in historical biography and what's generally called narrative history: history as story-telling.

By the early 1960s, there was a moral consensus on what needed to be done on civil rights.

The race question in America has often been about race, but it has equally often been about power.

Reagan is the subject of ongoing political debate, and a lot of liberals don't want to take Reagan any more seriously than they did when he was president. I understand why they don't, but they should.

In the academic world, biographies of these great figures of the past fell out of favor in the 1960s, when there was a turn toward social history, which meant the history of the voiceless and faceless. But the public at large never embraced the idea that these dead white guys should be abandoned.

Previous candidates who get elected are almost always sobered by the office and the responsibility they take on. Donald Trump shows no evidence of that. He's the same Trump that he was when he was host of his reality TV show. He's the same Trump that he was when he was a candidate.

You can always find people, ordinary people, who will support your particular view, so it becomes a politics of personality, especially at the presidential level. People often go for somebody that they like or somebody that they can identify with.

You might say presidents are drafting the first chapter of their memoirs in these seventh-year State of the Union addresses. They're trying to get the public and the media to think about their presidencies in the way that they would like to have them thought of.

Some years ago, I read Thomas Carlyle's history of the French Revolution, and I was very taken by the way he told the story, and it seemed as though I was right in the middle of things. And it took me a while to figure out how he achieved that effect, and one of the ways was to write it in the present tense.

The American political system is based on the president taking the initiative and Congress responding. With President Trump, it's been the opposite.

I'm the farthest thing from a bibliophile. I purge my collection regularly: If I haven't read a book in a couple of years, I try to give it to someone who will.

For Andrew Jackson, politics was very personal. He hated not just the federal debt. He hated debt at all.

Everything that happens today is like something in the past, but it's also unlike things in the past. We never know until an event happens if it's the similarities or differences that matter more.

If you wanted to, you could write history in Haiku.

The president of the United States from the 1940s until 2017 was considered the leader of the free world - probably the most powerful person in the world - not simply in terms of America's military might but in terms of the moral authority of the president. Donald Trump has largely abdicated that.

In the early days of the republic, the secretary of state was the heir apparent to the president. Presidents could easily hand-pick their party's next candidate. The party caucuses formally selected the candidates, but presidents guided the process.

Toward the end of the 1964 presidential campaign, Reagan gives a speech on behalf of Barry Goldwater. It was like a screen test for a new career.

It's hard to say that Trump actually has a health care policy.

Americans knock themselves out, especially since 9/11, praising the military.