We knew it was going to be difficult to get to the moon. We didn't know how difficult.

Frequently on the lunar surface I said to myself, 'This is the Moon, that is the Earth. I'm really here, I'm really here!'

Test pilots have a litmus test for evaluating problems. When something goes wrong, they ask, "Is this thing still flying?" If the answer is yes, then there's no immediate danger, no need to overreact.

But I found that being an artist and doing accurate work is very difficult.

It's hard not to be excited when you're going to find a way to land on the moon.

One of the great things about the universe is that it's fair.

I think everything depends on money.