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.

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.

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

When you don't take into account the way ecological systems work, then you do damage.

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 do have fun. Even when I’m fighting I’m enjoying it: I think there’s nothing as exhilarating as protecting that which you find precious.

We have a very old conservation movement, particularly in the United States, which has focused on campaigns to protect endangered species: the spotted owl, the old-growth forest. But usually it stops there. To me, biodiversity is the full spectrum. Species conservation is not only about wilderness conservation. It’s also about protecting the livelihood of people even while changing the dominant relationship that humans have had with other species. In India, it’s an economic issue, not just an ecological one.