There is not a discovery in science, however revolutionary, however sparkling with insight, that does not arise out of what went before.

To surrender to ignorance and call it God has always been premature, and it remains premature today.

Considering what human beings do and have done to human beings (and to other living things as well) ... I can never imagine what the devil people think computers can add to the horrors.

In the presence of total Darkness, the mind finds it absolutely necessary to create light.

What I will be remembered for are the Foundation Trilogy and the Three Laws of Robotics. What I want to be remembered for is no one book, or no dozen books. Any single thing I have written can be paralleled or even surpassed by something someone else has done. However, my total corpus for quantity, quality and variety can be duplicated by no one else. That is what I want to be remembered for.

From my close observation of writers... they fall into two groups: 1) those who bleed copiously and visibly at any bad review, and 2) those who bleed copiously and secretly at any bad review.

When I feel difficulty coming on, I switch to another book I'm writing. When I get back to the problem, my unconscious has solved it.