Surprisingly, a large number of people who fell out with their partners contacted us, saying that they would love to fly on a Virgle spaceship. But out of April Fools' jokes come real things, and I wouldn't be surprised, within the next 50 years, [if] there are one-way trips heading out into space with people on it. It would be very exciting.

Good customer service begins at the top. If your senior people don't get it, even the strongest links further down the line can become compromised.

Learn to live on the edge.

Never take your eyes off the cash flow because it's the life blood of business.

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

You don't learn to walk by following rules. You learn by doing, and by falling over.

My mother always taught me never to look back in regret but to move on to the next thing. The amount of time people waste dwelling on failures rather than putting that energy into another project, always amazes me. I have fun running all the Virgin businesses-so a setback is never a bad experience, just a learning curve.