As a Green, my goal is to put a smile on the face of the coming generations.

I have seen such an immense change from the total repression and criminality of homosexuality in my lifetime. It does make me much more buoyant and optimistic about the future. If that change can occur in that time there's hope for many other changes.

Renewable energy is proven technology, the price is dropping, the rest of the world is going that way, that's where our investment should be going as well.

I am not a conventionally religious man, but in the wilderness I have come closest to finding myself and knowing the universe and accepting God - by which I mean accepting all that I don't know.

I will be Green until the day I die, if not for a long time after.

Exxon, Coca-Cola, BHP Billiton and News Corporation have much more say in organising the global agenda than the planet's 5 billion mature-age voters without a ballot box.

I am aware that one should always make room for renewal in politics. A democracy is the healthier for the turnover of the depth of talent there is in its community.