If we want energy security, then we have to reduce our appetite for fossil fuels. There's no other way. Other issues may crowd the headlines, but this is our fundamental challenge. Big challenges require bold action and leadership. To get the United States off fossil fuels in this uneasy national climate of terrorism and conflict in the Persian Gulf, we must treat the issue with the urgence and persistance it deserves. The measure of our success will be the condition on which we leave the world for the next generation.

Like all actors, I was open to taking on new challenges, including those outside my comfort zone.

Ideas aren't real estate, they grow collectively and that knocks out the egotistical loneliness that generally infects art.

The way I deal with arthritis is to keep moving. As long as I can play hard tennis, as long as I can ski or ride a horse - all kinds of things can come your way. As long as you can, do it. People who retire die. My dad retired and died shortly after. Just keep moving.

The tough thing about adulthood is it starts before you even know it starts.

The meter is ticking [particularly in the face of climate change], so you've got to get to as much as you can as fast as you can. I grew up with 'This Land Is Our Land,' and public land doesn't belong to that administration or this one. We want our kids to grow up with real natural places, not just photos of them.

What is it with you people? You think not getting caught in a lie is the same thing as telling the truth?