If you're looking to become an entrepreneur then don't waste your time going to university or business school - just get on and do it.

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

Taking bold climate action now has the potential to unleash the full power of business and at the same time lift millions of people out of poverty. We're the first generation to recognize this and the last generation that will have this opportunity.

By working hard, by making the right moves, you can create your own luck, I think. But certainly luck plays a part.

I believe a good leader brings out the best in people by listening to them, trusting in them, believing in them, respecting them and letting them have a go.

Whenever I see people getting a bad deal I want to step in and do something about it. Of course, this is not pure altruism - there's a profit to be made too.

I think sometimes when you come from a conservative background, you want to rebel a little bit. I dropped out of school at 15 and learned early in life that saying yes was a lot more fun than saying no. If you have the opportunity to explore the skies and attempt something people haven't done before - well, I was damned if I was going to sit around watching television while someone else was doing it.