My biggest motivation? Just to keep challenging myself. I see life almost like one long University education that I never had - everyday I'm learning something new.

Branding is everything. A young girl once came up to me and told me I could be famous because I looked just like Richard Branson!

Global warming is another big area that we need to get on top of. And diseases in Africa, which we're also working on and seeing if we can make a difference on. And there are lots of issues that governments seem to be blind about.

There is no greater thing you can do with your life and your work than follow your passions – in a way that serves the world and you.

It's better to say nothing than spend 1,000 words or an hour speech saying nothing. Get to the point.

Every business, like a painting, operates according to its own rules. There are many ways to run a successful company. What works once may never work again. What everyone tells you never to do may just work, once.

As people's access to the internet grows we're seeing the sharing economy boom - I think our obsession with ownership is at a tipping point and the sharing economy is part of the antidote for that.