9/11 changed everything. We lose more Americans every year drowning in the bathtub than through terrorism. But terrorism has been used as a lever to frighten people, pass legislation, sound tough and coerce us into giving away our rights in pursuit of phantom problems.

I began by telling the President that there was a cancer growing on the presidency, and if the cancer was not removed, the president himself would be killed by it.

There's no good that can come out of secrecy.

One of the reasons I thought a censure resolution was appropriate was because if somebody had censured Nixon or even if a resolution of either house had passed, saying what you're doing is unacceptable to Congress, that shot across the bow might have straightened him up.

I don't think Trump is a deeply self-aware person. But he's absolutely off the charts as a narcissist. He is the consummate narcissistic salesman. He is in fact a sick man. And that's potentially very dangerous. The only positive thing about Trump is that he has no ideology, he is an empty vessel, surrounded by people who give him ideas, and it only matters which ideas will shine the light on Trump.

There's a political reality about impeachment. It's purely a political process. The interpretation of "high crimes and misdemeanors" can reach a long way, all the way to sex in the Oval Office, which was an absurd use of the impeachment clause.

There are similiarities between Nixon and Trump, no question. But there are also big differences. Nixon was shy, private, he attacked the media behind closed doors and insulted people behind their backs, and we only know about it because of the taping system in the Oval Office. The dark side, the vengeance we only know because of these tapes. Trump is right out and front with it. He actually campaigned on how nasty he can be, which found resonance with enough voters to get him into the White House.