An atom-blaster is a good weapon, but it can point both ways.

Isn't it sad that you can tell people that the ozone layer is being depleted, the forests are being cut down, the deserts are advancing steadily, that the greenhouse effect will raise the sea level 200 feet, that overpopulation is choking us, that pollution is killing us, that nuclear war may destroy us - and they yawn and settle back for a comfortable nap. But tell them that the Martians are landing, and they scream and run.

Intelligence is a valuable thing, but it is not usually the key to survival. Sheer fecundity ... usually counts. The intelligent gorilla doesn't do as well as the less intelligent but more-fecund rat, which doesn't do as well as the still-less-intelligent but still-more-fecund cockroach, which doesn't do as well as the minimally-intelligent but maximally-fecund bacterium.

Tens of millions of Americans who neither know or understand the actual arguments for, or even against, evolution, march in the Army of the Night with their Bibles held high

Science fiction writers foresee the inevitable, and although problems and catastrophes may be inevitable, solutions are not.

To insult someone we call him 'bestial. For deliberate cruelty and nature, 'human' might be the greater insult.

I received the fundamentals of my education in school, but that was not enough. My real education, the superstructure, the details, the true architecture, I got out of the public library.