“Never change a winning game; always change a losing one.”

I stand by my assertions that although you can know what happens to any individual species that you modify, you cannot be certain what will happen to the ecosystem.

NASA is an engine of innovation and inspiration as well as the world’s premier space exploration agency, and we are well served by politicians working to keep it that way, instead of turning it into a mere jobs program, or worse, cutting its budget.

Without an end to the burning of fossil fuels, coal especially, most of us will live shorter lives. I’m hopeful, but very, very concerned.

Tax dollars intended for science education must not be used to teach creationism as any sort of real explanation of nature, because any observation or process of inference about our origin and the nature of the universe disproves creationism in every respect.

My father was a very good Boy Scout. He was very skilled with knots, and he showed me how to tie a bow tie.

If you just take a single human and put him or her in the forest he or she might not do very well without some sort of education which he got or she got from some tribe.

When we see the shadow on our images, are we seeing the time 11 minutes ago on Mars? Or are we seeing the time on Mars as observed from Earth now? It’s like time travel problems in science fiction. When is now; when was then?

Winter lingered so long in the lap of Spring that it occasioned a great deal of talk.

Our goal in science is to discover universal laws of nature. That pursuit fills me with wonder.

The strange thing about grinding that might surprise many people is that you can grind things and shape them using materials that are generally somewhat softer than the thing you’re grinding and shaping.

The most serious problem facing humankind is climate change. All of these people breathing and burning our atmosphere has led to an extraordinarily dangerous situation.

It fills me with joy to know that we can pursue these answers. It is an astonishing thing that we are — you and I are one of the ways the universe knows itself.

Unlike science, creationism cannot predict anything, and it cannot provide satisfactory answers about the past.

People get a lot out of being religious. They have strong senses of community and mutual support. So, what’s not to love [there]?

Think how fortunate we are to know this much. But think also of all that’s yet to be discovered. Here’s hoping the deep answers to the deep questions-from the nature of consciousness to the origin of life-will be found in not too much more time.

Apparently there is redundancy in memory: You store the same memory in different parts of your brain for accessing at different speeds. That speed would depend on the frequency of use and the importance of the knowledge.

This is a game of misses. The guy who misses the best is going to win.

We certainly haven’t used that as a motivation, … The games themselves and the time that they’ve put in in preparation for these games is motivation enough. I don’t think that has anything to do with it at all.

It takes me about a week and a half to really analyze a game – play by play.

Nobody likes to fail but failure is an essential part of life and of learning. If your uniform isn’t dirty, you haven’t been in the game.

The game is the ultimate significance to me because it is so important to a lot of people. It has left a mark on our culture to be voted as one of the best to ever play.

At home I mostly stick to online Scrabble, or chess or Risk – games I find far less addictive than the spectacular games created for consoles these days. But, whenever I get the chance I head over to my friend Kyri’s house to play his PS3.

I like to be against the odds. I’m not afraid to be lonely at the top. With me, it’s just the satisfaction of the game. Just performance.

Before the 11th of September, in my discussions with many officials of the United States, some of them are Congressmen, I used to say that “don’t deal with terrorists as playing games.” It’s a different story. You’re going to pay the price if you’re not wise in dealing with terrorists.