It isn't effective or productive to force your employees to do anything. Choice empowers people and makes for a more content workforce.

My very first venture was a national student magazine to try to campaign against the [Vietnam] War. And so I wanted to be an editor. I wanted to bring the magazine out. And in order for the magazine to survive I had to worry about the printing and the paper manufacturing and the distribution. And, you know, I had to try to, at the end of the year, have more money coming in than going out.

I moved into a nice houseboat in Little Venice when I was 15 years old. I found a girlfriend called Monday and a houseboat called Friday, so I had the week sewn up.

Listen. Take the best. Leave the rest.

There are millions of people out there who would love to become astronauts, who'd love to go to space - they'd love to look back at this wonderful world from space. That will be the engine that will enable us then to develop spaceships to transport people around the world at tremendous speeds in an environmentally friendly way.

Communicate your passion clearly, concisely and with genuine conviction.

Do not be embarrassed by your failures, learn from them and start again.