We can now manipulate images to such an extrodinary extent that there's no lie you cannot tell.

The future of life on earth depends on our ability to take action. Many individuals are doing what they can, but real success can only come if there's a change in our societies and our economics and in our politics. I've been lucky in my lifetime to see some of the greatest spectacles that the natural world has to offer. Surely we have a responsibility to leave for future generations a planet that is healthy, inhabitable by all species

You have to steer a course between not appalling people, but at the same time not misleading them.

All life is related. And it enables us to construct with confidence the complex tree that represents the history of life

The climate, the economic situation, rising birth rates; none of these things give me a lot of hope or reason to be optimistic.

It is that range of biodiversity that we must care for - the whole thing - rather than just one or two stars.

This last chapter .. may have given the impression that somehow man is the ultimate triumph of evolution, that all these millions of years of development have had no purpose other than to put him on earth. There is no scientific evidence whatever to support such a view and no reason to suppose that our stay here will be any more permanent than that of the dinosaur.