The Unexpected always comes at the most awkward times.
A civilization has the ethics it can afford
You learn by writing short stories. Keep writing short stories. The money's in novels, but writing short stories keeps your writing lean and pointed.
There is no cause so good or noble that it will not attract fuggheads; and the fuggheads will get all the press.
I love superconductors.
SF isn't a genre; SF is the matrix in which genres are embedded, and because the SF field is never going in any one direction at any one time, there is hardly a way to cut it off.