Drive, determination, passion and hard work are all free and more valuable than a pot of cash.

I think business leaders all over the world should not just think of how we can make lots of money, which is fine, but to take some of the problems in the world and get out there and tackle them using business. I think that if businesses do that we can get on top of these problems.

A company's employees are its greatest asset and your people are your product

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.

I've never sued anybody, though there have been one or two occasions I've wanted to strangle one or two people.

I know enough to know that no man is an island.

I will work day and night to avoid failure, but if I can't, I'll pick myself up the next day. The most important thing for entrepreneurs is not to be put off by failure.