Chris Hadfield

The best simulator for spacewalking is underwater - it allows full visuals and body movement in 3D. Virtual reality is good, too, and has some advantages, like full Station simulation, not just part. Like all simulators, they have parts that are wrong and misleading: an important thing to remember when preparing for reality.

There are no wishy-washy astronauts. You don't get up there by being uncaring and blase. And whatever gave you the sense of tenacity and purpose to get that far in life is absolutely reaffirmed and deepened by the experience itself.

One place that I looked at a lot from space and which looks alluring is New Zealand, especially the North Island. It's a big broad valley with a river flowing through it, and you can see the wine-making dryness of the land.

I'd worked at a small town newspaper, and I was thinking of all the strange stories that I had seen float through the newsroom in my time there that were dismissed as kind of amusing curiosities. Somehow from that I got to this idea of an eccentric alcoholic who built a lighthouse in the woods.

I always look forward to going for a walk in Rushcutters Bay Park, right down to the bottom where you can look in the clear water of the harbour. I use that time to clear my head and really focus my thoughts.