No communication technology has ever disappeared, but instead becomes increasingly less important as the technological horizon widens.

One theory which can no longer be taken very seriously is that UFOs are interstellar spaceships.

I sometimes think that the universe is a machine designed for the perpetual astonishment of astronomers.

Can the synthesis of man and machine ever be stable, or will the purely organic component become such a hindrance that it has to be discarded?

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

Though the man-apes often fought and wrestled one another, their disputes very seldom resulted in serious injuries. Having no claws or fighting canine teeth, and being well protected by hair, they could not inflict much harm on one another. In any event, they had little surplus energy for such unproductive behavior; snarling and threatening was a much more efficient way of asserting their points of view.

The goal of the future is full unemployment, so we can play. That's why we have to destroy the present politico-economic system.