I've fallen down crevasses, been bitten by snakes, been knocked unconscious, had various limbs broken and once, a heavy camera came plunging down which very nearly decapitated me.

How you speak about others speaks loudest about yourself.

All worthwhile journeys have big obstacles. It's the way of the world. The rewards go to those who can push through those trying moments and still manage to keep a smile on their face.

The rewards of the wild and the rewards of the survivor go to those who can dig deep, and, ultimately, to the guy who can stay alive.

Is your ego small enough, and your backbone strong enough, to raise others up high on your shoulders?

When I'm filming, survival requires movement. You need your energy, and you've got to eat the bad stuff, and survival food is rarely pretty, but you kind of do it. I get in that zone, and I eat the nasty stuff, but I'm not like that when I'm back home.

I do see a lot of the hard end of ecology, and my feeling is that we live on a super-exciting planet but a super-fragile one.