The balloons only have one life and the only way of finding out whether they work is to attempt to fly around the world.

Run lean; avoid unnecessary expenses.

To be successful, you have to be out there, you have to hit the ground running, and if you have a good team around you and more than a fair share of luck, you might make something happen. But you certainly can't guarantee it just by following someone else's formula.

We will be producing supersonic planes which will go far, far faster than Concordes. New York to Tokyo could be less than an hour. You could be traveling at 19,000 miles an hour orbitally.

What's the quickest way to become a millionaire? Borrow fivers off everyone you meet.

I enjoy the company of other people. That's where I get most of my satisfaction from

It is the satisfaction of doing it for yourself and motivating others to work with you in bringing it about. It is about the fun, innovation, creativity with the rewards being far greater than purely financial.