I guess we all like to be recognized not for one piece of fireworks, but for the ledger of our daily work.

Science has not yet mastered prophecy. We predict too much for the next year and yet far too little for the next 10.

Research is creating new knowledge.

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

Mystery creates wonder and wonder is the basis of man's desire to understand.

It's a brilliant surface in that sunlight. The horizon seems quite close to you because the curvature is so much more pronounced than here on earth. It's an interesting place to be. I recommend it.

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

I was elated, ecstatic and extremely surprised that we were successful.

I put up my thumb and it blotted out the planet Earth.

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.

I fully expected that, by the end of the century, we would have achieved substantially more than we actually did.

I believe that every human has a finite number of heartbeats. I don't intend to waste any of mine running around doing exercises.

I believe every human has a finite number of heartbeats. I don't intend to waste any of mine.

Houston, Tranquillity Base here. The Eagle has landed.

Here men from the planet Earth first set foot upon the Moon. July 1969 AD. We came in peace for all mankind.