There is something about participating; it is almost my religion. If the world is still here in 100 years, people will know the importance of participating, not just being spectators. Millions of small groups around the world, that don't necessarily all agree with one another, are made up of people who are not just sitting back waiting for someone to do things for them. No one can prove anything, but of course if I didn't believe it had some kind of power, I wouldn't be trying to do it.

I believe that all technological societies tend to self-destruct. The reason is that the very things that make us a successful technological society, such as our curiosity, our ambition and determination, will also cause us to fall.

This world is so full of hypocrisy, the only way you can be honest is to be a hermit.

My dad, the old professor, used to say, 'Never get into an argument about what's folk music and what isn't.'

You can't work on everything all the time, so start where you are.

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.

And there's a wonderful parable in the New Testament: The sower scatters seeds. Some seeds fall in the pathway and get stamped on, and they don't grow. Some fall on the rocks, and they don't grow. But some seeds fall on fallow ground, and they grow and multiply a thousandfold. Who knows where some good little thing that you've done may bring results years later that you never dreamed of?