I never learned the rules in the first place. To change the game is at the heart of what Virgin stands for, so the company culture has always been: "Don't sweat it: rules were meant to be broken."

We spend most of our lives working. So why do so few people have a good time doing it?

I definitely go on gut instinct but it has always had the back up of research and information.

We must rapidly wean ourselves off our dependence on coal and fossil fuels.

As an adventurer...I try to protect against the downside. I make sure I have covered as many eventualities as I can. In the end, you have to take calculated risks; otherwise you're going to sit in mothballs all day and do nothing.

So unlike having to convert, you know, all the cars' or all the lorries' petrol stations, once you've actually got the clean fuels, it's relatively easy to, you know, get it to the airplanes.

Don't think about making money, think about making a difference, spot where others are doing it badly and do it better