Time is valuable; people are busy.

You know, when a president is about to leave office, most of the time most people are dying for him to go on and get out of there. But there are a few little rituals that have to be observed. One of them is that the president must host the incoming president in the White House, smile as if they love each other and give the American people the idea that democracy is peaceful and honourable and there will be a good transfer of power

A president cant go to every memorial service.

If the Presidents Club had a seal, around the ring would be three words: cooperation, competition, and consolation. On the one hand, the presidents have powerful motives—personal and patriotic—to help one another succeed and comfort one another when they fail. But at the same time they all compete for history’s blessing.

Eisenhower advocated a variety of strong actions which he had never taken when he was president. Maybe this was just the pattern of former presidents; maybe it reflected how much the circumstances had changed on the ground.

If you want to humble an empire it makes sense to maim its cathedrals. They are symbols of its faith, and when they crumple and burn, it tells us we are not so powerful and we can't be safe. The Twin Towers of the World Trade Center, planted at the base of Manhattan island with the Statue of Liberty as their sentry, and the Pentagon, a squat, concrete fort on the banks of the Potomac, are the sanctuaries of money and power that our enemies may imagine define us. But that assumes our faith rests on what we can buy and build, and that has never been America's true God.

[Former chief executives] come away thinking that America needs a strong, functioning presidency to succeed, and they become very protective of that office. Democrats and Republicans alike are willing to put aside their own party's self-interest to preserve the presidency. That's been true over the decades.