If you don't encounter setbacks in your career, if you don't have doubts and disappointments , let me tell you, you're not dreaming big enough.

You've got to give people a fair chance of saying what they believe, and then you've got to decide, "Do you believe 'em?"

Cities with clean air gain an economic advantage, because where people want to live and work, businesses want to invest.

You can't depend on polls.

We need to inject some old-fashioned American values and common-sense, practical thinking into our energy policy.

Progress is not inevitable. It's up to us to create it.

My personal view is, why don't you get out there and try to do something about the things that you don't like, create the jobs that we are lacking, rather than just yell and scream. But if you want to yell and scream, we'll make sure you can do it.