Spacemen - men who work in space, pilots and jetmen and astrogators and such - are men who like a few million miles of elbow room.

Cats have no sense of humor, they have terribly inflated egos, and they are very touchy.

There ought not to be anything in the whole universe that man can't poke his nose into-that's the way we're built and I assume that there's some reason for that.

Once upon a time there was a Martian named Valentine Michael Smith.

I don't know Who is cranking; I'm pleased He doesn't stop.

A great artist can look at an old woman, portray her exactly as she is ... and force the viewer to see the pretty girl she used to be ... more than that, he can make anyone with the sensitivity of an armadillo see that this lovely young girl is still alive

Nothing could go wrong because nothing had...I meant "nothing would." No - Then I quit trying to phrase it, realizing that if time travel ever became widespread, English grammar was going to have to add a whole new set of tenses to describe reflexive situations - conjugations that would make the French literary tenses and the Latin historical tenses look simple.