The mountains are a demanding, cold place, and they don't allow for mistakes.

Mountains are freedom. Treat them respectfully.

If people want to go do some big outdoor thing for their ego, have them climb snowy mountains rather than shoot animals.

The alpine environment is very delicate. I've been able to see change in the mountains in the 20 years that I've been climbing full-time. Glaciers have receded. The tree-line is changing. That's very rapid to see nature changing in a 20-year period.

Standing on the apex of our planet is humbling. I'm starved of oxygen, depleted of reserves, unable to eat, and bound by anxiety. This is a dangerous place. Yet the symbolism of standing on top of the world gives me a chance to experience time on a cosmic scale.

It's more of an adventure when you set off into unknown territory, and there's nothing like that feeling you get when you discover a place on the Earth where no one has ever been.