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.

Floyd could imagine a dozen things that could go wrong; it was little consolation that it was always the thirteenth that actually happened.

The limits of the possible can only be defined by going beyond them into the impossible.

Reading computer manuals without the hardware is as frustrating as reading sex manuals without the software.

Anything that is theoretically possible will be achieved in practice, no matter what the technical difficulties are, if it is desired greatly enough.

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

I'm quite fond of the writer who told a beginning author, "If you've got a message, use Western Union."