Climbing for speed records will probably become more popular, a mania which has just begun. Climbers climb not just to see how fast and efficiently they can do it, but far worse, to see how much faster and more efficiently they are than a party which did the same climb a few days before. The climb becomes secondary, no more important than a racetrack. Man is pitted against man.

Everything we make pollutes. The most responsible thing we can do is to make each product as well as we know how so it lasts as long as possible.

You have a whole life in the outdoors, you realize you have a sense of responsibility to protect these wild places.

Doing risk sports had taught me another important lesson: never exceed your limits. You push the envelope and you live for those moments when you’re right on the edge, but you don’t go over. You have to be true to yourself; you have to know your strengths and limitations and live within your means. The same is true for a business. The sooner a company tries to be what it is not, the sooner it tries to ‘have it all,’ the sooner it will die.

My favorite quote about entrepreneurship is that to understand an entrepreneur, you should study a juvenile delinquent. They're both saying: "This sucks and I'm going to do it another way." You have to want to break the rules and prove that your way works.

There is a beginning and end to all life - and to all human endeavors. Species evolve and die off. Empires rise, then break apart. Businesses grow, then fold. There are no exceptions. I'm OK with all that. Yet it pains me to bear witness to the sixth great extinction, where we humans are directly responsible for the extirpation of so many wonderful creatures and invaluable indigenous cultures. It saddens me to observe the plight of our own species; we appear to be incapable of solving our problems.

We choose to believe that the granite is alive. If life is movement, then rock - with its atoms flying around like stars in cosmos - is alive.