Curiosity is the essence of human existence.

We leave as we came, and, God willing, as we shall return, with peace and hope for all mankind.

I'm quite disappointed that I'm still the last man on the moon.

If you begin to think you're something you're not, you're looking in the wrong mirror.

Prepare for the unknown, unexpected and inconceivable . . . after 50 years of flying I'm still learning every time I fly.

I've been asked about UFOs and I've said publicly I thought they were somebody else, some other civilization.

We went into darkness after being in daylight the whole time on the way to the Moon. And then we went into darkness. And we're in the shadow... of the Moon.

Yes, I am the last man to have walked on the moon, and that's a very dubious and disappointing honor. It's been far too long.

The mass gross absence of sound in space is more than just silence.

Nobody can take those footsteps I made on the surface of the moon away from me.

We will certainly see teachers, journalists, artists and poets in space. Whatever it takes to the be the best is what it will take to get you into space.

She says she loves me infinity power infinity power infinity into infinity! And I look at the sky, smile, and 'sigh!

Right isn't always legal.

...So when the weather wasn't too overbearingly hot he tucked her arm in the crook of his elbow, and they walked about town, running errands and asking questions.And falling in love

Design schools are good, I guess, sometimes I visit schools, but they are very very limiting.

Instead of physicists teaching physics, physicists should go home and see what physics applies to their home.

If you start pandering to young people, you're going to get accused of simply giving people what they want.

I do not think that the radio waves I have discovered will have any practical application.

Organizational health is the single greatest competitive advantage in any business.

Be too dumb to quit and too stubborn to back off.

Followers who tell the truth, and leaders who listen to it, are an unbeatable combination.