As its best, SF is the medium in which our miserable certainty that tomorrow will be different from today in ways we cant predict, can be transmuted to a sense of excitement and anticipation, occasionally evolving into awe. Poised between intransigent scepticism and uncritical credulity, it is par excellence the literature of the open mind.
John BrunnerIt's common platitude that knowledge is neutral but every now and then it would be useful if it were on your side and not theirs.
John Brunner