“The single thing which makes any man happiest is the realization that he has worked up to the limits of his ability, his capacity. It’s all the better, of course, if this work has made a contribution to knowledge, or toward moving the human race a little farther forward.”

People love conspiracy theories.

Gliders, sail planes, they’re wonderful flying machines. It’s the closest you can come to being a bird.

I believe that the message of Apollo XI was that in the spirit of Apollo, a free and open spirit, you can attack a very difficult goal and achieve it, if you can all agree and work together to achieve that goal.

Houston, Tranquillity Base here. The Eagle has landed.

In much of society, research means to investigate something you do not know or understand.

A picture does a great job, but it’s not nearly like being there.

This blowing dust became increasingly thicker. It was very much like landing in a fast moving ground fog.

I only go in a small fraction of an inch, maybe an eighth of an inch, but I can see the footprints of my boots and the treads in the fine sandy particles.

You’ve got to expect things are going to go wrong. And we always need to prepare ourselves for handling the unexpected.

The regret on our side is, they used to say years ago, we are reading about you in science class. Now they say, we are reading about you in history class.

It suddenly struck me that that tiny pea, pretty and blue, was the Earth. I put up my thumb and shut one eye, and my thumb blotted out the planet Earth. I didn’t feel like a giant. I felt very, very small.

Geologists have a saying – rocks remember.

Space has not changed but technology has, in many cases, improved dramatically.

It’s a great thing for a man to walk on the moon. But it’s a greater thing for God to walk on the earth.

I tell you, we’re going to be busy for a minute.

Pilots take no special joy in walking: pilots like flying.

Natural ability without education has more often raised a man to glory and virtue than education without natural ability.

Ability without honor is useless.

The leader of the genius must have the ability to make different opponents appear as if they belonged to one category.

The most we can say of democracy or freedom is that they give our personal abilities a little more influence on our well-being.

Patience is not simply the ability to wait, it’s more so how we behave while we are being patient that separates us.

She had it all, brains and body and the ability to tell me to go to hell whenever I deserved it. Love, at its finest.

A man who acquires the ability to take full possession of his own mind may take possession of anything else to which he is justly entitled.

Show me a man of average ability but extraordinary desire and I will show you a winner everytime.