The Unexpected always comes at the most awkward times.

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

For each human being there is an optimum ratio between change and stasis. Too little change, he grows bored. Too little stability, he panics and loses his ability to adapt. One who marries six times in ten years won't change jobs. One who moves often to serve his company will maintain a stable marriage. A woman chained to one home and family may redecorate frantically or take a lover or go to many costume parties.

My problem with new writers is that it takes me five or six years to memorise the right names.

In hindsight it may even seem inevitable that a socialist society will starve when it runs out of capitalists.

There were timelines branching and branching, a mega-universe of universes, millions more every minute. Billions? Trillions? The universe split every time someone made a decision. Split, so that every decision ever made could go both ways. Every choice made by every man, woman, and child was reversed in the universe next door.

It is a cardinal sin to bore the reader.