Research is what I'm doing when I don't know what I'm doing.

I have learned to use the word 'impossible' with the greatest caution.

We can lick gravity, but sometimes the paperwork is overwhelming.

There is just one thing I can promise you about the outer-space program - your tax-dollar will go further.

For my confirmation, I didn't get a watch and my first pair of long pants, like most Lutheran boys. I got a telescope. My mother thought it would make the best gift.

It will free man from the remaining chains, the chains of gravity which still tie him to this planet.