There is a huge body of business evidence now showing that energy savings give better service at lower cost with higher profit. We have to tear down barriers to successful markets and we have to create incentives to enter them.

On Bill Clinton: I have a simple question: Who's the last President to give you a balanced budget?

I know that the precise magnitude and patterns of climate change cannot be fully predicted. But global warming clearly is a growing, long-term threat with profound consequences. And make no mistake about it, it will take decades to reverse.

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

I think you have you to give people the facts [about global warming], and then you have to tell them, this is not like drinking Castor Oil. There is a, an economically exciting way for us to create a whole new generation of American jobs without costing them an enormous amount of money or forcing them to change their lifestyle.

In science, if the last 50 years were the age of physics, the next 50 years will be the age of biology.

It's good for young people to be angry about something.