The Earth is a tiny blue speck in a universe of unfriendly options.

'Green' issues at last are attracting serious attention, owing to critically important links between the environment and the economy, health, and our security.

Never before have we known what we know.

Look at a child and realize that their future is in your hands. It's not just those who will be here fifty years from now. The decisions we make in the next ten years will shape the next 10,000 years.

Scientists never stop asking. They're little kids who never grew up.

The opportunity that is unique [to our] time is what inspires me to do everything I can to move things forward. This is the first time that we have the capacity to understand our place in the greater scheme of things to the extent that we do.

We are all together in this, we are all together in this single living ecosystem called planet earth.