Time, we know, is relative. You can travel light years through the stars and back, and if you do it at the speed of light then, when you return, you may have aged mere seconds while your twin brother or sister will have aged twenty, thirty, forty or however many years it is, depending on how far you traveled. This will come to you as a profound shock, particularly if you didn't know you had a twin brother or sister.

There are two things in particular that it [the computer industry] failed to foresee: one was the coming of the Internet(...); the other was the fact that the century would end.

Here's what the Encyclopedia Galactica has to say about alcohol. It says that alcohol is a colourless volatile liquid formed by the fermentation of sugars and also notes its intoxicating effect on certain carbon-based life forms.

We are stuck with technology when what we really want is just stuff that works.

He would have felt safe if alongside the Dentrassis' underwear, the piles of Sqornshellous mattresses and the man from Betelgeuse holding up a small yellow fish and offering to put it in his ear he had been able to see just a small packet of cornflakes. But he couldn't, and he didn't feel safe.

Many words and expressions which only a matter of decades ago were considered so distastefully explicit that, were they merely to be breathed in public, the perpetrator would be shunned, barred from polite society, and in extreme cases shot through the lungs, are now thought to be very healthy and proper, and their use in everyday speech and writing is evidence of a well-adjusted, relaxed and totally un****ed-up personality.

The difference between us and a computer is that, the computer is blindingly stupid, but it is capable of being stupid many, many million times a second.