I was a risk-taker as a young man, and I don't regret it. I'm not adventurous in quite the same way now, but I still love the challenge of testing myself to the limits, flying around the world, or seeing if I can be the first to fly a balloon across the Atlantic, or trying to take people into space at an affordable price in an environmentally friendly way. I'll be going into space with three generations of my family!

Grow internally first. Strengthen your bottom line first before considering external growth.

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.

Some 80% of your life is spent working. You want to have fun at home; why shouldn't you have fun at work?

Respect is how to treat everyone, not just those you want to impress.

A company is simply a group of people. And as a leader of people, you have to be a great listener, you have to be a great motivator, you have to be very good at praising and looking for the best in people. People are no different from flowers. If you water flowers, they flourish. If you praise people, they flourish. That's a critical attribute of a leader.

On conflicts, generally speaking, the world is a hell of a lot better to live in today than it was thirty years ago, despite what's going on in Syria. There are definitely hopeful signs that the world is moving, decade by decade, in the right direction.