Nothing travels faster than the speed of light, with the possible exception of bad news, which obeys its own special laws.

He was constantly reminded of how startlingly different a place the world was when viewed from a point only three feet to the left.

This planet has - or rather had - a problem, which was this: most of the people living on it were unhappy for pretty much of the time. Many solutions were suggested for this problem, but most of these were largely concerned with the movement of small green pieces of paper, which was odd because on the whole it wasn't the small green pieces of paper that were unhappy.

Meanwhile, the poor Babel fish, by effectively removing all barriers to communication between different races and cultures, has caused more and bloodier wars than anything else in the history of creation.

Anything that happens, happens. Anything that, in happening, causes something else to happen, causes something else to happen. Anything that, in happening, causes itself to happen again, happens again. It doesn’t necessarily do it in chronological order, though.

All opinions are not equal. Some are a very great deal more robust, sophisticated and well supported in logic and argument than others.

There is no point in using the word 'impossible' to describe something that has clearly happened.