For Children: You will need to know the difference between Friday and a fried egg. It's quite a simple difference, but an important one. Friday comes at the end of the week, whereas a fried egg comes out of a chicken. Like most things, of course, it isn't quite that simple. The fried egg isn't properly a fried egg until it's been put in a frying pan and fried. This is something you wouldn't do to a Friday, of course, though you might do it on a Friday. You can also fry eggs on a Thursday, if you like, or on a cooker. It's all rather complicated, but it makes a kind of sense if you think about it for a while.

Anything that happens happens, anything that in happening causes something else to happen causes something else to happen, and anything that in happening causes itself to happen again, happens again. Although not necessarily in chronological order.

My favourite piece of information is that Branwell Brontë, brother of Emily and Charlotte, died standing up leaning against a mantelpiece, in order to prove it could be done. This is not quite true, in fact. My absolute favourite piece of information is the fact that young sloths are so inept that they frequently grab their own arms and legs instead of tree limbs, and fall out of trees.

'Stotting' is jumping upward with all four legs simultaneously. My advice: do not die until you've seen a large black poodle stotting in the snow.

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

I am fascinated by religion. (That's a completely different thing from believing in it!) It has had such an incalculably huge effect on human affairs. What is it? What does it represent? Why have we invented it? How does it keep going? What will become of it? I love to keep poking and prodding at it. I've thought about it so much over the years that that fascination is bound to spill over into my writing.

The hotel shop only had two decent books, and I'd written both of them.

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

Anything that is in the world when you're born is normal and ordinary and is just a natural part of the way the world works. Anything that's invented between when you're fifteen and thirty-five is new and exciting and revolutionary and you can probably get a career in it. Anything invented after you're thirty-five is against the natural order of things.