The future will either be green or not at all.

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 people of the Earth exist because our potential was there in the Big Bang, 13.7 billion years ago, as the universe exploded into being.

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

I didn't want to be a shock absorber; I wanted to deliver the shock.

Australia must prioritise education spending. It is not a question of whether or not we have the money, it is a question of how we choose to spend it.

Behind every successful man there's a lot of unsuccessful years.