The important thing is that you've got a strong foundation before you start to try to save the world or help other people.

If you are glass half empty type of person, maybe you just haven’t been holding the right glass

As we drifted to earth I sat up on the glass roof of the capsule, watching the beauty of the golden dawn as it broke over the desert. This was a day I never thought I'd see and the rising sun and growing warmth of the day seemed very precious. It made me aware that hard-won things are more valuable than those that come too easily. It reminded me to always enjoy the moment.

As much as you need a strong personality to build a business from scratch, you also must understand the art of delegation.

I've never sued anybody, though there have been one or two occasions I've wanted to strangle one or two people.

Every risk is worth taking as long as it's for a good cause, and contributes to a good life.

And obviously, from our own personal point of view, the principal challenge is a personal challenge.