I'm a humanist. I'm neither one side nor the other.

Humanity is facing a very big, slow, long, drawn-out threat, and that is to do with the way the weather is changing and the size of the population.

I think we're lucky to be living when we are, because things are going to get worse.

People are not going to care about animal conservation unless they think that animals are worthwhile.

The process of making natural history films is to try to prevent the animal knowing you are there, so you get glimpses of a non-human world, and that is a transporting thing.

You'll discover in countries where women have control over their own bodies, where they have education, where they have birth control, where they have facilities and where they are literate, when those things happen, the birth rate falls.

I don't approve of sunbathing, and it's bad for you.