We have a business that some people feel pollutes, and I happen to agree with them. ... And so on the basis of trying to do good and, you know, hopefully turn a profit, what we did was we pledged that we'd put all the profits from our airline business into trying to develop clean fuels.

If you don't succeed at first, there's no need for the F word (Failure). Pick yourself up and try, try again.

Taking bold climate action now has the potential to unleash the full power of business and at the same time lift millions of people out of poverty. We're the first generation to recognize this and the last generation that will have this opportunity.

Don't think about making money, think about making a difference, spot where others are doing it badly and do it better

Entrepreneurship is about turning what excites you in life into capital, so that you can do more of it and move forward with it.

The best lessons are usually learned from failure. You musn't beat yourself up if you fail - just pick yourself up, learn as much as you can from the experience and get on with the next challenge...The brave may not live forever, but the cautious never live at all.

You shouldn't be looking for people slipping up, you should be looking for all the good things people do and praising those.