Do we really require so many gardening programmes, makeover programmes or celebrity chefs?

That people will object very much to seeing a predator killing its prey, and yet, in the news, will accept showing shots of people shooting one another.

It is vital that there is a narrator figure whom people believe. That's why I never do commercials. If I started saying that margarine was the same as motherhood, people would think I was a liar.

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

Climate change will affect the whole of humanity, while terrorist attacks will only affect a small section of humanity. Of course, you wouldn't say that if you were related to someone who had been beheaded or blown up or murdered.

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

The whole of science, and one is tempted to think the whole of the life of any thinking man, is trying to come to terms with the relationship between yourself and the natural world. Why are you here, and how do you fit in, and what's it all about.