You have a brake in your brain that stops you doing stupid things. The older you are, the earlier that brake comes on. When you're 20 you stop at nothing; when you're older you're cleverer than when you're 20, so your brain brake operates more often!

The less you talk, the more time you have for the essential things.

I was not interested at all in Formula One when I left; I was very busy with my airline. But slowly I started missing the adrenaline rush and the driving of such fantastic cars at the limit. In reality this urge never disappears when you're a top driver, because I think we're a different breed of people, we need to take chances, we need to push ourselves to the limit all the time, that sort of thing. It stays with you, although you can kill it by losing motivation or other things in your life, but it never leaves you forever.

Sebastian [ Vettel] can also learn to be more laid-back. It's never too late to learn. He's got some way to go. He's young and will turn out well. I'm not worried about that. He'll raise the bar ever higher.

You appreciate that it is very easy to die and you have to arrange your life to cope with that reality.

Business is much less transparent than a win in a Grand Prix; in a race you drive over the finishing line first and you have won. In business it is different.

When things change a lot, some guys handle the change better than others, but that doesn't mean the guys that take longer to get the hang of things are suddenly slow drivers!