An entrepreneur is somebody who is taking bold risks, is often doing things that have never been done before, trying to do things better. And an adventurer is challenging themselves, often doing things that have never been done before, seeing what they're capable of. In both cases, you've got to protect against the downside.

With space travel, [it's] no different. You know, in 1990 I read the name Virgin Galactic Airways. Loved the name. And set out to try to find an engineer or rocket scientist in the world who could build a safe, reusable rocket that could take people to and from space and we could start a whole new era of commercial space travel.

My mother always taught me never to look back in regret but to move on to the next thing.

Meet regularly with your business team and brainstorm. Intricate business problems are mostly resolved at brainstorming sessions.

For a successful entrepreneur it can mean extreme wealth. But with extreme wealth comes extreme responsibility.

If you're hurt, lick your wounds and get up again. If you've given it your absolute best, it's time to move forward.

We'll not be sending anyone into space before it is safe and the vehicle is well and truly tested.