What SF can do better than anything else is show us the range of our possible futures, and what we can do to realize the good ones and avoid the nasty ones.

I think the rising and falling popularity of areas like hard SF and far-future SF is, to a considerable extent, the same as any other fashion.

Usually if nobody hates a piece, nobody loves it, either; and a magazine which sets itself the goal of provoking thought is not doing its job if everybody agrees with what it does.

Through our entire history we have become accustomed to pushing [animals] around in ways dictated by our own wants and needs without much regard for theirs.

As for sticking strictly to presently known science, I will simply point out that we have already experienced at least two major revolutions in science in this century alone.

What SF can do better than anything else is show us the range of our possible futures, and what we can do to realize the good ones and avoid the nasty ones.

Resist the temptation to try to use dazzling style to conceal weakness of substance.