Food is the place where you begin.

You are not Atlas carrying the world on your shoulder. It is good to remember that the planet is carrying you.

When the wilderness movement emerged, it emerged separate from the issue of social inequality and the economic problems of survival. It was a preservationist ecology movement created by an occupying culture. Clearly, a wilderness movement started by Native Americans would not have had the same roots.

Population control is not an issue involving contraceptives for third world women. It is an issue of ecological justice.

Diversity creates harmony, and harmony creates beauty, balance, bounty and peace in nature and society, in agriculture and culture, in science and in politics.

Although two thirds of our planet is water, we face an acute water shortage. The water crisis is the most pervasive , most severe, and most invisible dimension of the ecological devastation of the earth.

My travels through physics really are the same urges that make me travel through ecology. They are not really different, except that there is an added dimension of seeing ecological destruction and seeing the very life-support system that makes us survive on this planet being destroyed. That makes me do more than just inquire; it compels me to act and to intervene.