Democracy cannot survive overpopulation.

There is nothing frightening about an eternal dreamless sleep. Surely it is better than eternal torment in Hell and eternal boredom in Heaven.

The Bible contains legendary, historical, and ethical contents. It is quite possible to consider them separately, and one doesn't have to accept the legends in order to get the ethics. Fundamentalists make a grave mistake to insist on the letter of the writings, because they drive away many who can't swallow the Adam-and-Eve bit.

With both people and computers on the job, computer error can be more quickly tracked down and corrected by people and, conversely, human error can be more quickly corrected by computers. What it amounts to is that nothing serious can happen unless human error and computer error take place simultaneously. And that hardly ever happens.

Modern science fiction is the only form of literature that consistently considers the nature of the changes that face us.

We're forever teetering on the brink of the unknowable, and trying to understand what can't be understood.

I even got a letter from a young woman in British Columbia that began as follows: 'Today I am eighteen. I am sitting at the window, looking out at the rain, and thinking how much I love you.'