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

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

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

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