There are quite a few things I've done that even I thought might have been one step too far. But if you are willing to make a fool of yourself and make people smile, as long as you do it with a sense of fun, you can get away with it.

And in the process, we have come up with fuels - algae-based fuels, isobutanol-based fuels and other fuels - that we think will power the planes in the future so that, you know, by 2020 I hope that our planes will be powered on fuels that are clean fuels and are not polluting the environment so that we'll have a green airline and an airline that actually has fuels that will be hopefully cheaper than the dirty fuels of the past. So [we're] doing good and also turning a profit at the same time.

I have always believed that there is no point in having regrets as you learn far more from mistakes than successes. Embrace a mistake and learn from it; don't regret them.

Engage your emotions at work. Your instincts and emotions are there to help you.

We've all got to do everything we can to avoid conflicts.

One key to entrepreneurial success is to get a great group of people around you who believe in your idea.

We went all the way down the Himalayan chain for a day and a half. That was magnificent, except the Chinese told us they were going to shoot us down if we came out the far end. So I spent a lot of my time contacting former Prime Minister Tony Blair begging him to tell the Chinese we were coming in this direction by mistake and could he please say we have no nasty motives for flying into their territory.