If India is an emerging economy with millions of new consumers, sell them the Volvo. Sell them the Cielo car. Sell them whatever you can, hamburgers and KFCs. It’s the middle classes who have moved into being able to own a car, a refrigerator. For them there is this mantra that the General Electric refrigerator is better than some other model, that the Cielo car is fancier than the Ambassador.

I absolutely get thrills from taking on these big guys and recognizing how, behind all their power, they are so empty. I just keep going at it. Each of these balloons does deflate. I’ve seen a lot of balloons get deflated in my life.

An organic farmer is the best peacemaker today, because there is more violence, more death, more destruction, more wars, through a violent industrial agricultural system. And to shift away from that into an agriculture of peace is what organic farming is doing.

The time has come to reclaim the stolen harvest and celebrate the growing and giving of good food as the highest gift and the most revolutionary act.

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.

Unless the poor of the world agitate for themselves to be heard, there will be no changes in their circumstances.

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.