I did my masters in elementary particles. But the foundations of elementary particles is quantum theory and there were too many conceptual problems around quantum theory that I couldn't live with. So I decided I was going to work on the foundations of quantum theory. That's what I did my Ph.D on.

Every farmer must go to the seed industry every year to buy their seed and pay an 80 percent royalty to a corporation. Over-the-fence exchanges have started to be treated as crimes. Or, if you need a biological pest control, you can no longer use the need seed in your back yard. Instead you have to depend on the Grace Corporation or some other entity. That kind of dependency basically leads to increased poverty and increased ecological destruction.

The liberation of the earth, the liberation of women, the liberation of all humanity is the next step of freedom we need to work for, and it's the next step of peace that we need to create.

The people who see the population explosion in the Malthusian way - as a geometric progression - forget that population growth is not a biological issue. People are not increasing in numbers out of stupidity and ignorance. Population growth is an ecological phenomenon linked very intimately to other issues, such as the usurpation of the resources which allow people to live.

Today the environmental movement has become opposed to issues of justice. You can see this in the way issues are framed. It's a permanent replay of jobs-versus-the-environment, in nature-versus-bread. These are extremely artificial dichotomies.

The director of the institute where I was working apologized about these young, enthusiastic researchers when the World Bank visited because he was afraid the institute would lose the World Bank consultancies.I went back home and started the Research Foundation for Science, Technology, and Ecology—an extremely elaborate name for the tiny institute that I started in my mother’s cow shed. My parents handed over family resources and said, “Put them to public purpose.” That’s how I survived.

The art of teaching is clarity and the art of learning is to listen.