The danger is different from the fear. ... [practice] what to do if things go wrong, as well as right.

Spaceflight isn't just about doing experiments, it's about an extension of human culture.

Our role is to develop techniques that allow us to provide emergency life-saving procedures to injured patients in an extreme, remote environment without the presence of a physician.

Don't let life randomly kick you into the adult you don't want to become

Almost everything worthwhile carries with it some sort of risk.

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

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

Focus on the journey, not on arriving at a certain destination.

Remember, nobody changes the world on their own.

Every decision you make, from what you eat to what you do with your time tonight, turns you into who you are tomorrow and the day after that.

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

That was the trick - to keep punching, no matter what.

Learn the rules. And play by the rules.

If You believe in yourself you can reach everything you want.

The only right you have with anyone in life is to the right to walk away.

One of Wordsworth's Lake District neighbours remarked upon hearing of the poet's death "I suppose his son will carry on the business."

In dealing with a girl or a horse, one lets nature take its course

One day they'll let you out of that dry, empty cell. You'll return to the Separates, and you'll feel the rain once more. And you'll grow straight, this time, toward this sunlight. I know you will.

I used to hate flying. I would sit there, rigid, convinced that if I relaxed, the plane would drop out of the sky.

As soon as you see 'Dame' in front of someone's name, you get nervous, but Dame Maggie Smith is the most wonderfully gentle woman I have ever met. She never had a bad word to say.

To the God in myself is probably the most honest answer. I think everybody has a divine destiny.