The first issue that compelled me was a very strange split between India being highly development scientifically (we were the third biggest scientific manpower in the world then) and yet at the same time struggling with amazing poverty. The linear equation that says that modern science equals progress and the reduction of poverty did not apply to India. It wasn't working.

Because of these new car models there is suddenly on the streets of Delhi a new intolerance by the motorists for both the cows and the cyclists. So for the first time the sacred cow in India, which used to be such a wonderful speed-breaker, is now seen as a nuisance. For the first time, I’ve seen cows being hit and hurt. These guys just go right past, and if the cow is sitting on the road, they don’t care. We can’t afford to have a sacred car rather than a sacred cow.

I still can't figure out what inspired me to do physics. But since I was nine or ten years old, I wanted to be like [Albert] Einstein. He was my hero. I knew no physicists. I knew no scientists. I had nobody around me. And I went to a convent that didn't even have higher mathematics and physics. I taught myself these subjects in order to get into university.

We've moved from wisdom to knowledge, and now we're moving from knowledge to information, and that information is so partial – that we're creating incomplete human beings.

Gandhi’s idea of swadeshi—that local societies should put their own resources and capacities to use to meet their needs as a basic element of freedom—is becoming increasingly relevant. We cannot afford to forget that we need self-rule, especially in this world of globalization.

The role of geo-engineering should, in a world of responsibility, in a world of scientifically enlightened decision making and ecological understanding, it should be zero. There is no role for geo-engeneering. Because what is geoengineering but extending the engineering paradigm?

I have a deep connection with Mahatma Gandhi, partly because my mother was a very, very staunch Gandhian and brought us up that way. When I was six years old, and all the girls were getting nylon dresses, I was very keen to get a nylon frock for my birthday. My mother said, “I can get it for you, but would you rather—through how you live and what you wear and what you eat—ensure that food goes into the hands of the weaver or ensure that profits go into the bank of an industrialist?” That became such a checkstone for everything in life.