We are not machines exploring the universe, we are people.

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.

Friendship was a concept men bandied about to save face when they were rejected.

I cannot think that we are useless or God would not have created us.

No one can feel as the owner of the country and no one can feel excluded from the right of property. We must all suffer Colombia.

Every age hath its own problem, and every soul its particular aspiration.

I call children "our ultimate investment."

I'm used to a feeling of doubleness, of thinking one thing and having to do another, a constant tug-of-war.

I love everything about fashion. I even love the fittings and watching it evolve from a pattern to a muslin to the final product.

I'm just singing what I feel in my heart.

A notion for a story is for me a confluence of real events, historical perhaps, or from my own memory to create an exciting fusion.

The great American novel has not only already been written, it has already been rejected.