I have two rules in life - to hell with it, whatever it is, and get your work done.

In our time the search for extraterrestrial life will eventually change our laws, our religions, our philosophies, our arts, our recreations, as well as our sciences. Space, the mirror, waits for life to come look for itself there.

We have everything we need to be happy but we aren't happy. Something is missing... It is not books you need, it's some of the things that are in books. The magic is only in what books say, how they stitched the patches of the universe together into one garment for us.

The important thing is to be in love with something.

Space travel is life-enhancing, and anything that's life-enhancing is worth doing. It makes you want to live forever.

And I saw then and there you take a man half-bad and a women half-bad and put their two good halves together and you got one human all good to share between.

If someone sends you a love letter you've got to answer back.