The war on drugs has gone on for about forty-five, fifty years - and it's been a complete failure. If you had a business that was failing so badly, you would change course. And it's just incredible that governments continue along the same course.

Space travel will be like every other business. There will be competitors. . . . Thirty months from now, I'm confident we'll be flying people into space.

Protect your reputation. Don't be afraid of making mistakes.

Embrace a mistake and learn from it; don't regret them.

Sometimes I do wake up in the mornings and feel like I've just had the most incredible dream. I've just dreamt my life

I have always looked on my businesses not just as money-making machines, but as adventures that can, I hope, make people better off.

There's no better satisfaction than watching the people around you, who have worked day and night to get something right, realising the dream.