In challenging a kzin, a simple scream of rage is sufficient. You scream and you leap.

There is a technical, literary term for those who mistake the opinions and beliefs of characters in a novel for those of the author. The term is 'idiot'.

Building one space station for everyone was and is insane: we should have built a dozen.

Anything you don't understand is dangerous until you do understand it.

In general, I don't know when inspiration will pop up.

One mark of a good officer, he remembered, was the ability to make quick decisions. If they happen to be right, so much the better.

It is a cardinal sin to bore the reader.