We must have an expansionary vision, one that captures the imagination and diversity of the whole community, one which benefits a nation which has moved beyond the basics of literacy and numeracy and which wants to develop a learning culture.

In securing the future of the planet, we secure happiness for ourselves. One of the aims of the Greens is to turn around the tide of pessimism amongst the young people of the world.

We are all born bonded to nature; that's why we put depictions of flowers and forests, rather than bulldozers or log piles, on our walls.

Wilderness has become one of the world's fastest disappearing resources, and it is non-renewable. Yet unlike oil, gold or woodchips, it is essential to the wellbeing of humanity. We are made of it and fashioned by it...our psychological beings resonate with it.

There's a presumption that somehow you calculate beforehand whether something is going to be good politically or not. I simply don't.

Real life security and contentment come not from putting a gun in the cupboard, but from taking a role in the world's future.

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.