The natural world is the greatest source of excitement; ... of visual beauty ... of intellectual interest. It is the greatest source of so much in life that makes life worth living.

Most must make special preparations for winter, and life with little sun.

We have a finite environment the planet. Anyone who thinks that you can have infinite growth in a finite environment is either a madman or an economist.

A third of the land on our planet is desert. These great scars on the face of the Earth

n understanding of the natural world and what's in it is a source of not only a great curiosity but great fulfillment.

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

All our environmental problems become easier to solve with fewer people and harder and ultimately impossible to solve with ever more people.

Dealing with global warming doesn't mean we have all got to suddenly stop breathing. Dealing with global warmning means that we have to stop waste, and if you travel for no reason whatsoever, that is a waste.

I've been bitten by a python. Not a very big one. I was being silly, saying: 'Oh, it's not poisonous...' Then, wallop! But you have fear around animals.

We are a plague on the Earth.