Explore this next great frontier where the boundaries between work and higher purpose are merging into one, where doing good really is good for business.

My definition of success? The more you are actively and practically engaged, the more successful you will feel.

What we are trying to do at Virgin is not to have one enormous company in one sector under one banner, but to have two hundred or even three hundred separate companies. Each company can stand on its own feet and, in that way, although we've got a brand that links them, if we were to have another tragedy such as that of 11 September - which hurt the airline industry - it would not bring the whole group crashing down.

We will eventually build space science labs and hotels, prodding the capability for missions beyond the orbit of the Earth. Our space-hotel guests will be able to take breath-taking excursions, flying a couple of hundred feet above the Moon's surface in small two-man spaceships. In time, we will launch missions to Mars and beyond.

I have always looked on my businesses not just as money-making machines, but as adventures that can, I hope, make people better off.

Unless you dream, you're not going to achieve anything.

I just love life. I mean, you know, I love every second of it. I love people.