There is a sunrise or a sunset from space every 92 minutes so there is an incredible amount of beauty to see from up there.

"What's the next thing that's going to kill me?" is a mantra for pilots and astronauts.

You can't just ignore spacewalking suit; it partially defines the experience. So maybe the most difficult thing is becoming completely attuned to efficiently wearing a garment that is so inhibiting to motion, and making it look effortless, as if it's the most natural thing to be out there on a spacewalk.

Competence means keeping your head in a crisis, sticking with a task even when it seems hopeless, and improvising good solutions to tough problems when every second counts. It encompasses ingenuity, determination and being prepared for anything.

My favourite city for nightlife is Toronto, as it has such a multicultural feel, with so many different restaurants and theatres.

Early success is a terrible teacher. You're essentially being rewarded for a lack of preparation, so when you find yourself in a situation where you must prepare, you can't do it. You don't know how.

As I have discovered again and again, things are never as bad (or as good) as they seem at the time.