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.

Man must understand his universe in order to understand his destiny.

Opportunities will be available to you that you cannot imagine.

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

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

Ever since I was a little boy, I dreamed I would do something important in aviation.

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