The world has never truly had to develop an ethic of interdependence rooted in our common humanity. And if we do it, the 21st century will be the most interesting, exciting, peaceful era in history.

Poverty, discrimination, and ignorance restrict growth.

What's a man got to do to get in the top fifty?

There are always going to be people who want to be president, and some days I'd like to give it to them.

Our overriding environmental challenge tonight is the worldwide problem of climate change, global warming, the gathering crisis that requires worldwide action.

I ask that all Americans demonstrate in their personal and public lives... the high ethical standards that are essential to good character and to the continued success of our Nation.

I don't mind the debates, they're good for America, but we shouldn't be out there attacking each other all the time.