So unlike having to convert, you know, all the cars' or all the lorries' petrol stations, once you've actually got the clean fuels, it's relatively easy to, you know, get it to the airplanes.

Train people well enough so they can leave, treat them well enough so they don't want to.

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.

You can't run a business without taking risks. The brave may not live forever - but the cautious do not live at all!

I've never sued anybody, though there have been one or two occasions I've wanted to strangle one or two people.

If you aim higher than you expect, you could reach higher than you dreamed.

Enjoy life - you only get one.