You don't think progress goes in a straight line, do you? Do you recognize that it is an ascending, accelerating, maybe even exponential curve? It takes hell's own time to get started, but when it goes it goes like a bomb.

It's clear that science and science fiction have overlapping populations.

You can't really predict the future. All you can do is invent it.

Advertising reaches out to touch the fantasy part of people's lives. And you know, most people's fantasies are pretty sad.

My old English buddy, John Rackham, wrote and told me what made science fiction different from all other kinds of literature - science fiction is written according to the science fiction method.

Science fiction is the very literature of change.

The future depicted in a good SF story ought to be in fact possible, or at least plausible. That means that the writer should be able to convince the reader (and himself) that the wonders he is describing really can come true... and that gets tricky when you take a good, hard look at the world around you.