Religion is a by-product of fear. For much of human history it may have been a necessary evil, but why was it more evil than necessary? Isn’t killing….

When all else failed, you had to rely on eyeball intrumentation..

No one of intelligence resents the inevitable..

Open the pod bay doors, Hal..

Space can be mapped and crossed and occupied without definable limit; but it can never be conquered..

The success of a science fiction writer is if he can write a good read..

Few artists thrive in solitude and nothing is more stimulating than the conflict of minds with similar interests..

The realisation that our small planet is only one of many worlds gives mankind the perspective it needs to realise sooner that our own world belongs ….

As three laws were good enough for Newton, I have modestly decided to stop there..

I have a fantasy where Ted Turner is elected President but refuses because he doesn't want to give up power..

What is becoming more interesting than the myths themselves has been the study of how the myths were constructed from sparse or unpromising facts ind….

Science fiction does not attempt to predict. It extrapolates. It just says, "What if?" not what will be? Because you can never predict what will happ….

As his body became more and more defenseless, so his means of offense became steadily more frightful..

Attempting to define science fiction is an undertaking almost as difficult, though not so popular, as trying to define pornography... In both pornogr….

Some dangers are so spectacular and so much beyond normal experience that the mind refuses to accept them as real, and watches the approach of doom w….

Human judges can show mercy. But against the laws of nature, there is no appeal..

There's no real objection to escapism, in the right places... We all want to escape occasionally. But science fiction is often very far from escapism….

The truth, as always, will be far stranger..

If there are any gods whose chief concern is man, they can't be very important gods..

Mars is the next frontier, what the Wild West was, what America was 500 years ago. It's time to strike out anew....Mars is where the action is for th….

Before the current decade ends, fee-paying passengers will be experiencing suborbital flights aboard privately funded vehicles. . . . It won't be too….