Economic and social misery increases in direct proportion to the size and power of the central government of a nation or state.

So the technology that does the least alteration of nature, the least harm to other species and systems, and provides the greatest intimacy of human with nature, is the best. We could make a scale with that in mind, and judge any technology by its place on that scale: speech and eyeglasses, say, would rank low; nuclear bombs and coal plants, high.

Everyone is shy - it is the inborn modesty that makes us able to live in harmony with other creatures and our fellows. Achievement comes not by denying shyness but, occasionally, by setting it aside and letting pride and perspiration come first.

And it was only when we invented the spear and began roaming the planet that technologies got complex and central to human survival.

I'm convinced that the catastrophes of the next two decades will be so vast as to bring about a world where life, if it survives, will be far simpler - and the technologies, too. Then we will have come full circle to something like life on the savanna.

I want to leave my country without leaving my home.

That is certainly the point: when the human species was born, on the African savanna, life was pretty good; we could live in harmony with the rest of nature, and that's what I've been calling Eden. The only technologies that humans devised for some 2 million years were fire and the hand ax. That's all. Eden didn't need anything more