I would like to die on Mars. Just not on impact.

The Universe is under no obligation to make sense to you.

That's one small step for a man, one giant leap for mankind.

The moon is a friend for the lonesome to talk to.

The Earth is the cradle of humanity, but mankind cannot stay in the cradle forever.

Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people.

There are no passengers on spaceship earth. We are all crew.

Modern science says: 'The sun is the past, the earth is the present, the moon is the future.' From an incandescent mass we have originated, and into a frozen mass we shall turn. Merciless is the law of nature, and rapidly and irresistibly we are drawn to our doom.

If you are in a spaceship that is traveling at the speed of light, and you turn on the headlights, does anything happen?

Space is an inspirational concept that allows you to dream big.

When you look at the stars and the galaxy, you feel that you are not just from any particular piece of land, but from the solar system.

Space is to place as eternity is to time.

What can we gain by sailing to the moon if we are not able to cross the abyss that separates us from ourselves? This is the most important of all voyages of discovery, and without it, all the rest are not only useless, but disastrous.

If the Sun and Moon should ever doubt, they'd immediately go out.