The risk of failure is a very personal thing. One of the quotes I like, I think this came from the famous basketball coach from California - John Wooden - is that, "Successful people - winners - do everything necessary to prepare to win, without the certainty of winning." Everybody would do everything necessary to prepare to win if winning was a certainty. So you're willing to put yourself out publicly and privately and say, "I'm going to do this."

Everybody has to solve that "meaning of life" and purpose question for themselves. Everybody does it their own way. I think you have to be thoughtful about the way that you're doing it. So I describe it as purpose. If you can think about leading a purposeful life - not just an accumulation but you actually make the world a better place - then I think in the grand scheme of the universe, that that explains our existence. If not, we're just passing through. We're grains of sand and we're blowing in the breeze.

"What would people say about you when you're gone?" That to me was a very important question. I thought about that for a couple of years and said, "What people say about you when you're gone doesn't matter. You're gone." What really matters is, "What do you say about yourself in the here and now? Are you proud of what you're doing?" If you had a short lease and it ended today, or it ends tomorrow, what would you wish you would have done? You better do it.

The foundation of leadership is your own moral compass. I think the best quality leaders really know where their moral compass is. They get it out when they are making decisions. It's their guide. But not only do you have to have a moral compass and take it out of your pocket, it has to have a true north.

I think finding the way in life is the hardest part. At every stage of life, every trial, every success, you know, you're going into some kind of fog. There isn't a plan that suddenly reveals itself, and you go, "Ta-da! Now I understand."

Growing up, I knew you were supposed to have a profession - and something better than being a shopkeeper, which is what my parents were.

I think I'm determined. And I think if you're determined, you're right. Your behavior is exactly the same when you're stubborn, except then you're wrong. And so, there's times when I'm wrong, and I'd say, "Well, you were the dark side of determined." But I think determination, you know, it's like have an idea, think about the idea, the risks involved. What does it take to get from here to there? And then once you make the choice, you just keep going.