If you want to say that the sky is black, and if I'm there, even if I fall back down again, I will be weightless for a period of time - maybe that's the definition of space.

I think humans will reach Mars, and I would like to see it happen in my lifetime.

The biggest benefit of Apollo was the inspiration it gave to a growing generation to get into science and aerospace.

If we can conquer space, we can conquer childhood hunger.

No dream is too high for those with their eyes in the sky!

Exploration is wired into our brains. If we can see the horizon, we want to know what's beyond.

I still say, 'Shoot for the moon; you might get there.'

Knowledge of the past and an optimistic view of the present give you great opportunities.

Many say exploration is part of our destiny, but it's actually our duty to future generations and their quest to ensure the survival of the human species.

Neil Armstrong was the first man to walk on the moon. I am the first man to piss his pants on the moon.

There may be aliens in our Milky Way galaxy, and there are billions of other galaxies. The probability is almost certain that there is life somewhere in space.

You have no right to kill others. Then how can you have a right to kill yourself?

Historically, science and society have gone separate ways, although society has provided the funds for science to grow, and in return, science has given society all the material things it enjoys.

Friends, there is nothing like your own family to make you appreciate strangers!

None are known to be good, till they have opportunity to be bad.

Whatever the color of a man's skin, we are all mankind. So every denial of freedom, of equal opportunity for a livelihood, or for an education, diminishes me.

I don't think I would have been a good mother. Being a parent brings immense responsibility. It's a Herculean task. It would be almost too much for me.

I couldn't claim that I have never felt the urge to explore evil, but when you descend into hell you have to be very careful.

Dogs are easy. If their tails are up and their eyes are soft, you're in.

Most learning is social, or what I call the cultural DNA. Everyone knows that word of mouth advertising is the best advertising. That's social learning.

I wondered what it was like to be inside her, just a curl of flesh swimming in the darkness, the quiet things that had passed between us.