The agriculture taught at colleges between 1930 and 1980 has caused more damage on the face of the Earth than any other factor.

Though the problems of the world are increasingly complex, the solutions remain embarrassingly simple.

We don't have to suppose we need oil, or governments, or anything.

I teach self-reliance, the world's most subversive practice. I teach people how to grow their own food, which is shockingly subversive. So, yes, it’s seditious. But it’s peaceful sedition.

If you're a simple person today, and want to live simply, that is awfully seditious. And to advise people to live simply is more seditious still.

Choose your friends from people who you like what they do - even though you mightn't like what they say.

The only ethical decision is to take responsibility for our own existence and that of our children.