The silencing of the rainforests is a double deforestation, not only of trees but a deforestation of the mind's music, medicine and knowledge.

Human language is lit with animal life: we play cats-cradle or have hare-brained ideas; we speak of badgering, or outfoxing someone; to squirrel something away and to ferret it out.

Cultures have long heard wisdom in non-human voices: Apollo, god of music, medicine and knowledge, came to Delphi in the form of a dolphin. But dolphins, which fill the oceans with blipping and chirping, and whales, which mew and caw in ultramarine jazz - a true rhapsody in blue - are hunted to the edge of silence.

Language is wild - you can't fence it or tell it what to do - and it's the same with people. Even under the worst excesses of Stalinism or consumerism, the human spirit will still express itself.

All definitions of wilderness that exclude people seem to me to be false. African 'wilderness' areas are racist because indigenous people are being cleared out of them so white people can go on holiday there.

Being adequately informed is a democratic duty, just as the vote is a democratic right. A misinformed electorate, voting without knowledge, is not a true democracy.

All humans are essentially wild creatures and hate confinement. We need what is wild, and we thrill to it, our wildness bubbling over with an anarchic joie de vivre. We glint when the wild light shines. The more suffocatingly enclosed we are - tamed by television, controlled by mortgages and bureaucracy - the louder our wild genes scream in aggression, anger and depression.