The three rules of the Librarians of Time and Space are: 1) Silence; 2) Books must be returned by no later than the date shown; and 3) Do not interfere with the nature of causality.

Legends don't have to make sense. They just have to be beautiful. Or at least interesting.

The most prudent thing any intelligent animal can do, if it would prefer its descendents not to spend a lot of time on a slab with electrodes clamped to their brains or sticking mines on the bottom of ships, or being patronised by zoologists, is to make bloody certain humans don't find out about it.

If you want to change a whole people, then you start with the girls. It stands to reason: they learn faster, and they pass on what they learn to their children.

It is often said that before you die your life passes before your eyes. It is in fact true. It's called living.

I mean, I wouldn't pay more than a couple of quid to see me, and I'm me.

People don't like change. But make the change fast enough and you go from one type of normal to another.