The good news is, we have everything we need now to respond to the challenge of global warming. We have all the technologies we need, more are being developed.... But we should not wait, we cannot wait, we must not wait.

The Congress is virtually incapable of passing any reforms unless they first get permission from the powerful special interests who are most affected by the proposal.

I take no pleasure in the fact that the scientific predictions I’ve relayed to popular audiences turn out to be true.

I want to extend condolences to the families of those who died in the service of the United Nations.

My counsel advises me that there is no controlling legal authority or case that says there was any violation of law whatsoever.

I will tell you that what gives me a sense of joy is having work to do that justifies pouring every ounce of energy I have into it. That's really a blessing to have in your life. And it gives you energy back when you have the privilege of doing work that makes you feel that way.

Our world faces a true planetary emergency. I know the phrase sounds shrill, and I know it's a challenge to the moral imagination.