I remember when we were in the World Cup in Australia and I had to win the singles against Tony Payne, best of seven legs, to win it. I was 2-0 down but ended up beating him I suffer much less than many of my colleagues. I am perfectly able to go to Australia and film within three hours of arrival.

I'm swanning round the world looking at the most fabulously interesting things. Such good fortune.

Being in touch with the natural world is crucial.

I don't think we are going to become extinct. We're very clever and extremely resourceful - and we will find ways of preserving ourselves, of that I'm sure. But whether our lives will be as rich as they are now is another question.

All the modern devices we have enable us to investigate things and have enabled us to do better.

In the old days... it was a basic, cardinal fact that producers didn't have opinions. When I was producing natural history programmes, I didn't use them as vehicles for my own opinion. They were factual programmes.

The question is, are we happy to suppose that our grandchildren may never be able to see an elephant except in a picture book?