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

"We had hundreds of thousands of people all dedicated to doing the perfect job, and I think they did about as well as anyone could ever have expected."

"As a boy, because I was born and raised in Ohio, about 60 miles north of Dayton, the legends of the Wrights have been in my memories as long as I can remember."

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

"Houston, Tranquillity Base here. The Eagle has landed."

"This is one small step for a man, one giant leap for mankind."

"If that's there, I believe that technology will probably step up to their part of it."

"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."

"Research is creating new knowledge."

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

"I think we're going to the moon because it's in the nature of the human being to face challenges. It's by the nature of his deep inner soul... we're required to do these things just as salmon swim upstream."

"Geologists have a saying - rocks remember."

"Yeah, I wasn't chosen to be first. I was just chosen to command that flight. Circumstance put me in that particular role. That wasn't planned by anyone."

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

"The important achievement of Apollo was demonstrating that humanity is not forever chained to this planet and our visions go rather further than that and our opportunities are unlimited."

"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."

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

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

"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."

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

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

"The one thing I regret was that my work required an enormous amount of my time, and a lot of travel."

"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."