Anything which is physically possible can always be made financially possible; money is a bugaboo of small minds.

Man can be chained, but he cannot be domesticated.

The second best thing about space travel is that the distances involved make war very difficult, usually impractical, and almost always unnecessary. This is probably a loss for most people, since war is our race's most popular diversion, one which gives purpose and color to dull and stupid lives. But it is a great boon to the intelligent man who fights only when he must-never for sport.

Never attempt to teach a pig to sing; it wastes your time and annoys the pig.

Girls are simply wonderful. Just to stand on a corner and watch them going past is delightful. They don't walk. At least not what we do when we walk. I don't know how to describe it, but it's much more complex and utterly delightful. They don't move just their feet; everything moves and in different directions . . . and all of it graceful.

The Ten Commandments are for lame brains. The first five are solely for the benefit of the priests and the powers that be; the second five are half truths, neither complete nor adequate.

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