I define science fiction as fiction in which things happen that are not possible today - that depend, for instance, on advanced space travel, time travel, the discovery of green monsters on other planets or galaxies, or that contain various technologies we have not yet developed.

Love is giving, marriage is buying and selling. You can't put love into a contract.

I enjoyed teaching. I liked the students. Having to formulate my ideas about literature made them clearer. I did not particularly enjoy the more bureaucratic aspects of the job. However, if you are teaching fervently, your energy and time are used up at a great rate.

Don't eat anything you aren't prepared to kill. Don't kill anything you aren't prepared to eat.

Your friend is intellectually honourable," Jimmy's mother would say. "He doesn't lie to himself.

A reader can never tell if it's a real thimble or an imaginary thimble, because by the time you're reading it, they're the same. It's a thimble. It's in the book.

And sometimes it happened, for a time. That kind of love comes and goes and is hard to remember afterwards, like pain. You would look at the man one day and you would think, I loved you, and the tense would be past, and you would be filled with a sense of wonder, because it was such an amazing and precarious and dumb thing to have done; and you would know too why your friends have been evasive about it, at the time.