You must write to the people's expertise.

A good science fiction story is a story with a human problem, and a human solution, which would not have happened at all without its science content.

Corollary 1: The existence of immense quantities of trash in science fiction is admitted and it is regrettable; but it is no more unnatural than the existence of trash anywhere.

Here's the point to be made - there are no synonyms. There are no two words that mean exactly the same thing.

Anybody can do anything he wants to if he wants to do it badly enough.

Just think about it," he said softly. "You can do practically anything. You can have practically everything. And none of it will keep you from being alone." "Shut up shut up...Everybody's alone." He nodded. "But some people learn how to live with it.

I repeat Sturgeon's Revelation, which was wrung out of me after twenty years of wearying defense of science fiction against attacks of people who used the worst examples of the field for ammunition, and whose conclusion was that ninety percent of it is crud.