Look at the bark of a redwood, and you see moss. If you peer beneath the bits and pieces of the moss, you'll see toads, small insects, a whole host of life that prospers in that miniature environment. A lumberman will look at a forest and see so many board feet of lumber. I see a living city.

I love music of all kinds, but there's no greater music than the sound of my grandchildren laughing; my kids, too.

We've got to alter our fossil fuel dependence and go to other energy sources.

Humans are the only creatures with the ability to dive deep in the sea, fly high in the sky, send instant messages around the globe, reflect on the past, assess the present and imagine the future.

We want to believe that we can continue doing what we've done for the past thousand years and not worry about the consequences coming back to us.

America gains most when individuals have great freedom to pursue personal goals without undue government interference.

If Darwin could get into a submarine and see what I've seen, thousand of feet beneath the ocean, I am just confident that he would be inspired to sit down and start writing all over again.