There is an old Arabic proverb, 'When the king puts the poet on his payroll, he cuts off the tongue of the poet', so throughout the ages, people in power have liked to control music, they used to throw songwriters in jail throughout history, and were assassinated.

I have sung in hobo jungles, and I have sung for the Rockefellers, and I am proud that I have never refused to sing for anybody.

I’ve found that festivals are a relatively painless way to meet people and make a few points that need making, without having to hit them over the head with too many speeches.

I would ask, "How can one have a technological society without research? How can one have research without researching dangerous areas? How can one research dangerous areas without uncovering dangerous information? How can you uncover dangerous information without it falling into the hands of insane people who will sooner or later destroy the human race, if not the whole of life on earth?" Who knows? God only knows!

This banjo surrounds hate and forces it to surrender.

Most scientists know what needs to be done to save our Earth. But the politicians don't listen to them. They will listen to popular pressure; the people got to supply that.

Anybody who wants to learn everything is pretty stupid. You learn what you can.