It's tough to know the value of water until it's gone.

I brag on the Democratic Party. We're libertarian on social issues, it's live and let live. Fiscally, we're conservative and responsible, and were environmentally conscious.

Good-faith re-examination of a position you've held in the past should be seen as a virtue, not a vice.

Any doctor will admit that any drug can have side effects, and that writing a prescription involves weighing the potential benefits against the risks.

I've learned from being in the woods that titles don't mean much and that actions speak a lot louder than words - even in Congress. I always look for the people who want to act - people who want to run the river or climb the mountain - even if they're not members of my political party.

Stem cells have the potential to be used to treat and better understand some of the world's most deadly and disabling diseases.

Truth be told, I'm much more comfortable in a pair of hiking boots or with a rack of climbing gear than in front of a laptop.