Political differences will always generate a healthy debate, but over time the dialogue has become more hateful and at times violent.

I support allowing gay couples to marry because of - not in spite of - my values. And many of those values are the same ones deeply held by those who do not believe in gay marriage.

We really don't have a policy [on climate change]. There's a lot of rhetoric and not a lot of action.

When I talk about the importance of the institution of marriage, I think of the commitment and the significance of standing in front of those closest to you and promising fidelity to your partner 'til death do you part.'

On the mountains mistakes are fatal. In politics, mistakes are wounding emotionally, but you recover. Personally, wilderness helps me get back in touch with natural rhythms, helps me reflect and, in the process, restore my creativity.

I believe climate change is real - and I believe we have to act to protect the climate as fast as we possibly can.

Our livelihood is intimately tied to the food we eat, water we drink and places where we recreate. That's why we have to promote responsibility and conservation when it comes to our natural resources.