If you don't make bold moves, the world doesn't move forward.

Every risk is worth taking as long as it's for a good cause, and contributes to a good life.

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.

The truth is this: the Earth cannot provide enough food and fresh water for 10 billion people, never mind homes, never mind roads, hospitals and schools.

Entrepreneurial business favours the open mind. It favours people whose optimism drives them to prepare for many possible futures, pretty much purely for the joy of doing so.

Starting a business is a huge amount of hard work... You had better enjoy it.

My general attitude to life is to enjoy every minute of every day. I never do anything with a feeling of, 'Oh God, I've got to do this today.'