American politics is theatre. There is a frightening emotionalism at national conventions.

Few American presidents are held in higher esteem than Thomas Jefferson. Though historians have scrutinized every phase of his long public career and found him wanting in a number of respects, he holds an unshakable place in the pantheon of American heroes.

Truman is now seen as a near-great president because he put in place the containment doctrine boosted by the Truman Doctrine and the Marshall Plan and NATO, which historians now see as having been at the center of American success in the cold war.

In seeking an empire of liberty, Jefferson wished not only to expand the country's territorial holdings, but also to extend American institutions around the globe.

The so-called second New Deal of 1935 - including the Works Progress Administration, Social Security and the Wagner Act legalizing union labor - represented an effort to meet the rising voices demanding a more aggressive government approach to the collapse of national prosperity.

Allegations that President Clinton pardoned Marc Rich partly in return for donations to his presidential library have raised questions about the value of such institutions and the federal appropriations that support them.

Public scandals are America's favorite parlor sport. Learning about the flaws and misdeeds of the rich and famous seems to satisfy our egalitarian yearnings.

Joseph McCarthy and the John Birch Society launched an anti-Communist crusade that won the support of millions of Americans in the 1950s.

Vice President Biden's surprising declaration of unqualified support for gay marriage seems to have forced President Obama into a public endorsement of a controversial social issue. It is difficult not to suspect that Biden's pronouncement aimed to give the president some political cover.

To be sure, Kennedy did not discount the importance of words in rallying the nation to meet its foreign and domestic challenges. Winston Churchill's powerful exhortations during World War II set a standard he had long admired. Kennedy was hardly unmindful of how important a great inaugural address could be.

After one party loses two elections in a row, there's sort of blood in the water.

What did in the Soviet Union was the Soviet Union.

One doesn't simply write about Lyndon Johnson. You get the Johnson treatment from beyond the grave - arm around you, nose to nose. I should admit that he also reminds me of my father, quite an overbearing and narcissistic character. And in some ways, he reminds me of myself. Another workaholic.

In the late 19th century, the Populists - a protest movement of mainly disaffected farmers and workers - threatened to overturn established authority.

Compared with other recent presidents whose stumbles and failures have assaulted the national self-esteem, memories of Kennedy continue to give the country faith that its better days are ahead. That's been reason enough to discount his limitations and remain enamored of his presidential performance.

At the end of the day, Americans are not so keen on ideologues, people who have such fixed positions that they can't see any virtue in the other side's point of view.

Television has an awful lot to do with the Kennedy mystique and the fact that he's frozen in people's minds at the age of 46, and he was handsome and personable and witty and charming.

The Bay of Pigs was an operation the United States endorsed. That was a preventive operation. We were afraid that Castro was going to subvert the hemisphere.

To be sure, hunters and sportsmen back gun rights. Beyond that, there are millions who see guns as a defense against fear - fear of criminals breaking into their homes or assaulting them on city streets.

By the time a second term rolls around, the illusions about a president have largely evaporated.

The consequence of the Bay of Pigs failure wasn't an acceptance of Castro and his control of Cuba but, rather, a renewed determination to bring him down by stealth.

Dwight Eisenhower, the Republican nominee in 1952, made a strong public commitment to ending the war in Korea, where fighting had reached a stalemate.

In counterfactual history, nothing is certain.

There is a line between scurrilous nonsense and serious discussion that laps over, especially in this day and age when you've got all this electronic media and these blogs and this kind of fanatical impulse to bring down the opposing candidate.

Harry Truman wrote scathing letters, but he almost never sent them.

Richard Nixon had a kind of Walter Mitty fantasy life. He was a man with a grandiose thoughts: dreams of not simply being president but maybe becoming one of the truly great presidents of American history.

Lyndon Johnson is not a comfortable model for President Obama to imitate. He is an all-but-forgotten president - pilloried for the failed war in Vietnam and criticized for grandiose reforms conservatives denounce as the epitome of federal social engineering that costs too much and does too little.

Clinton's egregious act of self-indulgence was outdone by an impeachment based not on constitutionally required high crimes and misdemeanors but on a vindictive determination to bring down a president who had offended self-righteous moralists eager to put a different political agenda in place.

Every year since 1990, the Gallup poll has asked Americans to assess all the presidents since John F. Kennedy. And every year, Kennedy comes out on top.

As someone who has more than a passing acquaintance with most of the 20th century presidents, I have often thought that their accomplishments have little staying power in shaping popular views of their leadership.

Nixon's deep antipathy toward Jews is well known, and he took a strange satisfaction in having Kissinger in his inner circle, where he could periodically taunt him.

Don't be intimidated by people who seem to be experts. Hear their points of view and get their judgements. But at the end of day, you've got to make a judgement because it's not their life that's going to be affected so much as your future.

John F. Kennedy went to bed at 3:30 in the morning on November 9, 1960, uncertain whether he had defeated Richard Nixon for the presidency. He thought he had won, but six states hung in the balance, and after months of exhaustive campaigning, he was too tired to stay awake any longer.

As for Vietnam, what matters is that Kennedy successfully resisted pressure to send anything more than military advisers, a stance that was a likely prelude to complete withdrawal from the conflict. There is solid evidence of his eagerness to end America's military role in that country's civil war.

George Washington sets the nation on its democratic path. Abraham Lincoln preserves it. Franklin Roosevelt sees the nation through depression and war.

McGeorge Bundy was a brilliant man who'd had a meteoric academic career and was the youngest man ever to be dean of the Harvard faculty. But he was also arrogant and looked upon all sorts of people and politicians as not to be taken all that seriously.

From the moment he took office in January of 1961, Kennedy had been eager to settle the Cuban problem without overt military action by the United States.

The 1890s was an intensely patriotic decade for Americans. It was a time of neo-imperialism, when the European powers and the United States were establishing their flags around the globe.

Flattery was one of Kissinger's principal tools in winning over Nixon, and a tool he employed shamelessly.

Theodore Roosevelt had drawn public attention to his attractive family in order to create a bond with ordinary Americans. Eleanor Roosevelt had successfully broached the idea that a First Lady could be nearly as much a public figure as her husband.

Coming out of WWII, there was the assumption, the hope, the vision of a world at peace, of a kind of Wilsonian universalism, that we and the Soviets would get along, we'd have a kind of lovefest for as far into the future as anyone could see.

When President Obama first unveiled his gun control proposals recommending a ban on assault weapons and high-capacity magazines and better background checks, there seemed to be momentum behind the effort. But then the proposals ran into a wall.

Despite its flaws, the American electoral system has produced Lincoln, the two Roosevelts, and Harry Truman.

Henry Kissinger never wanted the 20,000 pages of his telephone transcripts made public - not while he was alive, at any rate.

Once the public loses confidence in a president's leadership at a time of war, once they don't trust him anymore, once his credibility is sharply diminished, how does he get it back?

F.D.R. had an economic crisis of unprecedented proportions in 1933 when he drove 15 major bills through the Congress, and super majorities in the House and the Senate in 1935 when he won passage of Social Security.

During the 1937 congressional election campaign, Johnson's group probably paid $5,000 to Elliott Roosevelt, one of Franklin Roosevelt's sons, for a telegram in which Elliott suggested that the Roosevelt family favored Lyndon Johnson.

Despite an unqualified understanding that U.S. national security was inextricably bound up with Britain's survival, F.D.R. knew that his reelection in part rested on the hope that he would keep the country out of war.

In his State of the Union speech in January 1941, President Franklin Roosevelt declared America's commitment to Four Freedoms in the struggle against Nazi totalitarianism. Among them was the freedom from fear.

Success in past U.S. conflicts has not been strictly the result of military leadership but rather the judgment of the president in choosing generals and setting broad strategy.