What matters is working with a few close friends, people you respect, knowing that if times did turn bad these people would hold together.

I've been taught not to have any regrets. If we were to add up all of the hours spent regretting mistakes and use that time to develop new ideas, who knows how many brilliant new businesses would be created.

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.

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

Happiness is the secret ingredient for successful businesses. If you have a happy company it will be invincible.

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.

Lead by listening - to be a good leader you have to be a great listener.