One thing we know for sure is that change is certain. Progress is not. Progress depends on the choices we make today for tomorrow and on whether we meet our challenges and protect our values.

You show people what you're willing to fight for when you fight your friends.

Never waste a good crisis...Don't waste it when it can have a very positive impact on climate change and energy security.

I think I've been very consistent in my values.

It is hard sometimes to get the Congress to do what you want to do and you have to keep working at it.

Being human, we are imperfect. That's why we need each other. To catch each other when we falter. To encourage each other when we lose heart. Some may lead; others may follow; but none of us can go it alone.

Of all the jobs I've had, sliming fish was pretty good preparation for life in Washington.