Remember, nobody changes the world on their own.

Doing a space walk. It is one of the most rare human experiences. To leave your spaceship and go outside, so that you are alone in the universe with Earth distant and the universe around you. That is amazing.

My favourite city is Moscow, because of its history, which I find fascinating. As I learned to speak Russian, it made it even more interesting.

The cool things about space is when you put your pants on here, you can put them on two legs at a time.

Every single day you're the result of what you did on the days prior.

For the last several years and culminating in six months in orbit next year, I've been training for my third space flight. This one is almost in a category completely different than the previous two, specifically to live in on the space station for six months, to command a space ship and to fly a new rocket ship.

Decide in your heart of hearts what really excites and challenges you, and start moving your life in that direction