Probably all the books I've ever written have been efforts to define the boundaries of humanity.

I wrote speculative fiction because I loved to read it, and thought I could do better than some of the people who were getting published.

Actually ideas are everywhere. It's the paperwork, that is, sitting down and thinking them into a coherent story, trying to find just the right words, that can and usually does get to be labor.

And what we know, or think we know, about the universe of space and time is changing very quickly.

The Berserkers have been with me for about forty years, and we're not done yet.

I have some good stories yet to tell.

The advice would be the same for any kind of fiction. Keep writing, and keep sending things out, not to friends and relatives, but to people who have the power to buy. A lot of additional, useful tips could be added, but this is fundamental.