I've always been more interested in organisms that can move on their own than in stationary plants. But when I canoe or hike along the edge of lakes or oceans and see trees that seem to be growing out of rock faces, I am blown away. How do they do it?

The failure of world leaders to act on the critical issue of global warming is often blamed on economic considerations.

The future doesn't exist. The only thing that exists is now and our memory of what happened in the past. But because we invented the idea of a future, we're the only animal that realized we can affect the future by what we do today.

If America wants to retain its position as a global power, its president must listen to the people and show strong leadership at this turning point in human history.

Our political leaders must be honest and forthcoming with data that will allow citizens to use facts and figures to judge for themselves what state Social Security is in.

I hope I help lead my son's high school team to a state championship by the time I'm 45. I don't think I'm gonna have a helmet on when I'm 45.

You know, the truth is this: it is a leader's job to challenge the status quo. And when you do, you make enemies.

Tony Blair has turned his back on the principles he claimed he believed in before he stood shoulder-to-shoulder with George W. Bush. He was an entirely different kind of leader.