"The way I see it, commercial interests should manage a lunar base while NASA gets on with the really important task of flying to Mars."

"Astronauts are not superhuman. They lead ordinary lives and have varied personalities."

"Pascal Lee is a true pioneer of Mars exploration."

"Mars is much closer to the characteristics of Earth. It has a fall, winter, summer and spring. North Pole, South Pole, mountains and lots of ice. No one is going to live on Venus; no one is going to live on Jupiter."

"Having walked on the Moon, I know something about what we need to explore, really explore, in space."

"With his deeds, not only words, President Obama has revitalized our struggling space program."

"There should be an international lunar base. That is certainly doable."

"The way I see it, what is going to come out of the moon activities is a respect for U.S. leadership."

"America can take man to the moon, and America can take men to Mars - and beyond."

"People come up to me and say, 'It's too bad the space program got canceled.' This is not the case, and yet that is what most of the public thinks has happened."

"There were about six years when there was not one American who went into space. We shouldn't do that again."

"Mars has been flown by, orbited, smacked into, radar inspected, and rocketed onto, as well as bounced upon, rolled over, shoveled, drilled into, baked, and even laser blasted."

"What's aero braking? That's a way to use the gravity and upper atmosphere of Earth to sling shot a ship out either deeper into space, or slow it down to be 'captured' by Earth's gravity."

"Not everyone will understand this need for America to lead the world in space."

"Somebody would think I was trying to get favored treatment because my ancestors had the name Moon. And that's a joke."

"Can you imagine, in 2030, taking a space cruise on the very ship that carried the first human beings to Mars? I can't believe that people wouldn't line up for that possibility."

"When you're in a spacecraft, you need to know what things you can touch and what things you shouldn't touch!"

"I remember it was hard to believe that I was taking a step onto the lunar surface."

"There are many people talking about access to space and, 'How can we make that cheaper? How can we turn that into a Southwest Airlines versus the big airlines?'"

"I think the climate has been changing for billions of years."

Any man who can hitch the length and breadth of the galaxy, rough it, slum it, struggle against terrible odds, win through, and still knows where his towel is is clearly a man to be reckoned with.

Space by itself, and time by itself, are doomed to fade away into mere shadows, and only a kind union of the two will preserve an independent reality.