My running ambition is to keep doing it until I'm way past the point where I have any business running. Just to keep doing it throughout my whole life—to stay fit and feel good.

One day, people will be able to buy tickets to visit space.

I'm Chinese-American, of course, and so it's very interesting to see China actually launch their own astronauts, becoming the third nation, following the United States and Russia, to do so.

I think it's good to have competition. Now we have a third country that can launch astronauts, so it's good for all of us. It makes us a little bit more competitive and wanting to be the leader.

I hope that China will continue with space exploration. It would be logical to have international co-operation. I hope that it will come about and that I can be involved in it.

I loved flying as much as I thought I would and continue to fly aircraft.

As commander I was responsible for the overall success of the mission, and so I had to know at least a little bit about everything.

Space is very unforgiving business

Tinkering is something we need to know how to do in order to keep something like the space station running. I am a tinkerer by nature.

Of course, you'll have to meet the physical and psychological demands. A space walk takes a lot of energy.

Honesty is a very choosy virtue

Now I say that if you run more than 15 miles a week, it's for something other than aerobic fitness. Once you pass 15 miles, you do not see much further improvement.

Who sees the other half of Self, sees Truth.

All my siblings became artists. One's a novelist, my brother is a painter, my sister was a costume designer.

A hatt is not made for one shower.

Genius is a good deal like the sea ... Nothing can restrain its tide or quicken it.

You can't educate people that are not healthy. But you certainly can't keep them healthy if they're not educated.

Baby, after considerable thought I've reached the conclusion that the only conceivable legitimate answer to the Universe as constituted is a peal of hysterical laughter.

I'm not really interested in anybody, that's why I started rapping. I'm still a fan of Tupac. That's the only rapper that I'm still like, "Oh! Tupac!"

Whether you like it or not the millions are here, and here they will remain. If you do not lift them up, they will pull you down... Education must not simply teach work - it must teach life.