Any observations from the Moon or a sense of realising this or that about the greater meaning of things wasn't as influential for me as the experience of coming back and dealing with being a person who's been to the Moon.

Knowledge of the past and an optimistic view of the present give you great opportunities.

I'm convinced that sending people to Mars is so expensive that if you go once and bring the people back and then go again and bring the people back, we're eventually going to run out of money. But what if we send people the first time and they don't come back? What if they stay there?

There may be aliens in our Milky Way galaxy, and there are billions of other galaxies. The probability is almost certain that there is life somewhere in space.

My petite little platinum blonde beauty of a wife suddenly turned into a public-relations dynamo. "The business is Buzz!" she proclaimed, and indeed so it became.

The biggest benefit of Apollo was the inspiration it gave to a growing generation to get into science and aerospace.

Exploring and colonizing Mars can bring us new scientific understanding of climate change, of how planet-wide processes can make a warm and wet world into a barren landscape. By exploring and understanding Mars, we may gain key insights into the past and future of our own world.