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

Never tell a computer to forget it.

Never be embarrassed or ashamed by anything you choose to write.

Spray a book with insect spray, drop it in a bag, add some mothballs and seal it. Put it in another bag and seal it. Another. The packages piled up on the floor, each a book sealed in four plastic envelopes.

SF isn't a genre; SF is the matrix in which genres are embedded, and because the SF field is never going in any one direction at any one time, there is hardly a way to cut it off.

It's very difficult for a black man to get out of South-Central Los Angeles, and get out civilized....The only men I know who have escaped, all began reading Robert Heinlein at age ten.

How much intelligence does it take to sneak up on a leaf?