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

You don't climb mountains without a team, you don't climb mountains without being fit, you don't climb mountains without being prepared and you don't climb mountains without balancing the risks and rewards. And you never climb a mountain on accident - it has to be intentional.

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

It's the uncertainty, the challenge and the willingness to put it all on the line that draws a lot of people to climb mountains. That can also apply to a lot of other challenges in life, whether it's running for office, starting a family, going to grad school or taking all of your cash and assets and starting a business.

There is no question that we must do more to secure our borders - but how we go about securing them is also important.

It's my belief that, like every other American, gay and lesbian couples should be able to make a lifetime commitment to the person they love and protect their families.

The balance between freedom and security is a delicate one.