Material interests are not the only guiding light.

I was interested in aerospace and flying, and the U.S. is really the best place in the world for flying.

I don't know why I always liked aerospace engineering. I was in the 10th grade when I figured that's what I wanted to do.

If you want to do something, what does it matter where you are ranked?

It is a very overpowering realization that the Earth is so small. It affected me.

Some of the senior people, the very senior astronauts, shook my hand and said, 'K.C., you did a great job. Don't let anyone tell you different.'