No one is more dangerous than someone who thinks he has "The Truth". To be an atheist is almost as arrogant as to be a fundamentalist. But then again, I can get pretty arrogant.

I always like to make explicit the fact that before I went off not too long ago to fight in the trenches, I was a mathematician by profession. I don't like people to get the idea that I have to do this for a living. I mean, it isn't as though I had to do this, you know, I could be making, oh, three thousand dollars a year just teaching.

My last public performance for money was in 1967. For free, it was 1972, with the exception of two little one-shot, one-song things. But that's just for friends, out of friendship for the people involved, and also because it was fun.

If you visit American city, You will find it very pretty. Just two things of which you must beware: Don't drink the water and don't breathe the air. Pollution, pollution, They got smog and sewage and mud. Turn on your tap and get hot and cold running crud. See the halibuts and the sturgeons Being wiped out by detergents. Fish gotta swim and birds gotta fly, But they don't last long if they try. Pollution, pollution, You can use the latest toothpaste, And then rinse your mouth with industrial waste.

I wish people who have trouble communicating would just shut up.

Well I wasn't really attacking the religious beliefs [in the song 'The Vatican Rag'], I was attacking the formality of the rituals of the Catholic church; however, people took it wrongly.

Once the rockets are up, who cares where they come down?