Figure out for yourself what you want to be really good at, know that you'll never really satisfy yourself that you've made it, and accept that that's okay.

I don't see why human people make such a heavy trip out of sex. It isn't anything complex, it is simply the best thing in life, even better than food.

Since survival is the sine qua non, I now define the "moral behavior" as "behavior that tends toward survival".

Men rarely if ever dream up a god superior to themselves. Most gods have the manners and morals of a spoiled child.

Have you ever known me to be rude to a lady?" "I have seen you be intentionally rude to a woman. I have never seen you be rude to a lady.

If you've got the truth you can demonstrate it. Talking doesn't prove it.

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.