[Students for a Democratic Society] was on many campuses and it was a powerful organization. It was founded by Tom Hayden, who passed away very recently. It was one of the founders of SDS and that chief writer of the Port Huron Statement, which is still worth reading. It's kind of the Bernie Sanders campaign document in a funny way.

I'm different in the sense that every minute of every day, I change. I'm thinking. But the basic principles that have powered me forward are still there. They're not different.

One-hundred facts about Vietnam and we studied the fact sheet and got in to these arguments and it was fantastic, and I remember one moment when we heard two students saying don't talk to those guys, meaning my brother and me. They've just memorized that stupid fact sheet. And we thought, gosh do we sound that good? It didn't seem possible. But that was my introduction to politics.

I thought in 1965 that my job was to convince most Americans to be against the war. So I spent summers knocking on doors, handing out literature, trying to talk to people who didn't agree with me, trying to get them to see the war was wrong. And by 1968 a majority of Americans did oppose the war.

The great example, the killer example in history, is of course Abraham Lincoln, the great emancipator. Read his speeches. Read the debates. Wendell Phillips called him "the great slaver from Illinois."

The passions and commitments that ignited my activity as a student are the same passions and commitments that I have today.

We all want to believe this American pastoral, but there's more to it. We have to be willing to exile ourselves from the fantasies and the mythology that we create around ourselves, or we're doomed to kind of innocently blunder into every country in the world and murder people.