So far as we know, Earth is the only planet which supports life, and it is the only planet on which we can survive. Our bodies and our minds are fashioned by it. Our hearts resonate with it. There will be little joy for the human spirit if we destroy the natural fabric of Earth with nothing left to do but go shopping. When we imagine the world a century from now, when we look our great grandchildren in the eye and see them smiling back at us because they know we cared for them, we smile too!

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.

There are better alternatives... Australia should be exporting its solar technology, not its uranium.

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.

For comprehensive Earth action, an all-of-the-Earth representative democracy is required. That is, a global parliament.

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

I have never met a person in whom I did not see myself reflected.