Entrepreneursh ip is a great leveller, since having the benefit of a wealthy background or a generous investor isn't always an advantage. The wonderful thing is that money is not the sole currency when it comes to starting a business; drive, determination, passion and hard work are all free and more valuable than a pot of cash.

Be the best at what you do

We should focus on what people get done, not on how many hours or days worked. Just as we don't have a nine-to-five policy, we don't need a vacation policy.

Choose great people and shine in their shadows

One thing is certain in business, you and everyone around you will make mistakes.

There are millions of people out there who would love to become astronauts, who'd love to go to space - they'd love to look back at this wonderful world from space. That will be the engine that will enable us then to develop spaceships to transport people around the world at tremendous speeds in an environmentally friendly way.

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.