I've been to the Himalayas a half a dozen times and I love it. I'm just kind of tired of going literally twelve time zones around the world. I would rather go six time zones and get to Iceland or whatever it is.

I've always believed that photography is a way to shape human perception.

Early in my career I discovered that there was something really special about photographing at night that places your mind on the surface of the planet. You’re no longer just a human being walking around in the regular world. You’re a human animal striding around on the surface of the planet that’s out in the middle of the galaxy. We as a culture, we’re forgetting that we are actually natural organisms and that we have this very deep connection and contact with nature. You can’t divorce civilization from nature. We totally depend on it.

Each of us can and must shift our behavior according to our ability. For some, that means changing diet, shopping locally, or putting solar panels on their house. For others, it means using their voice to inspire transformative change.

I have often thought that my work with wildlife taught me the meaning of patience, and my work with the big trees taught me the meaning of humility, and my work with the ice has taught me the meaning of mortality.

Glacial pace is actually an incorrect concept. The glaciers move a lot faster and they react a lot faster than people imagine.

The cumulative effect of each person making a change in his or her own life will make a difference.