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.

You can solo-climb Everest without using oxygen or you can pay guides and Sherpas to carry your loads, put ladders across crevasses, lay in 6,000 feet of fixed ropes, and have one Sherpa pulling you and another pushing you. ... The goal of climbing big, dangerous mountains should be to attain some sort of spiritual and personal growth, but this won't happen if you compromise away the entire process.

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.

We're a part of nature. As we destroy nature, we destroy ourselves. It's a selfish thing to want to protect nature.

Mastery... is to work toward simplicity; replace complex technology with knowledge, hard work, and skill.

I say the last 10 percent of the way to perfection takes so much of your life that it isn't worth the effort. This overzealous attitude is what creates religious fanatics, body Nazis, and athletes who are exceedingly dull to converse with.

Real adventure is defined best as a journey from which you may not come back alive, and certainly not as the same person.