If you understand about the natural world, we’re a part of the system and you can’t feed lions grass. But because we have the intelligence to choose…… - David Attenborough

In moments of great grief, that's where you look and immerse yourself. You realise you are not immortal, you are not a god, you are part of the natural world and you come to accept that.

If we and the rest of the backboned animals were to disappear overnight, the rest of the world would get on pretty well. But if they were to disappear, the land's ecosystems would collapse. The soil would lose its fertility. Many of the plants would no longer be pollinated. Lots of animals, amphibians, reptiles, birds, mammals would have nothing to eat. And our fields and pastures would be covered with dung and carrion. These small creatures are within a few inches of our feet, wherever we go on land – but often, they're disregarded. We would do very well to remember them.

It used to be said, that in places like this, nature eventually failed to support man, the truth is exactly the reverse, here man failed to support nature. Ten thousand years ago man regarded the natural world as divine, but as he domesticated animals and plants so nature lost some of its mystery and appeared to be little more than a larder that could be raided with impunity.