I'm not over-fond of animals. I am merely astounded by them.

I'm not an animal lover if that means you think things are nice if you can pat them, but I am intoxicated by animals.

The only acceptable way to solve ecological problems is if you can persuade people to have fewer children. In the Victorian times, there were families of 15 children. Someone like Edward Lear, he was the last of 21 children. And so what we have to think about is offering people the alternative choice. And in the West, that's what's happening. The birth rate has been dropping steadily and still is. I'm wanting human beings to be better off so they don't view children as an insurance for the future.

People must feel that the natural world is important and valuable and beautiful and wonderful and an amazement and a pleasure.

If we were all to reduce our demands for energy, it would make an enormous amount of difference.

It's like saying that two and two equals four, but if you wish to believe it, it could also be five ... Evolution is not a theory; it is a fact, every bit as much as the historical fact that William the Conqueror landed in 1066.

You'll find people where their conditions aren't changing in any way, its rather rare for them to be happy.