The most watched programme on the BBC, after the news, is probably 'Doctor Who.' What has happened is that science fiction has been subsumed into modern literature. There are grandparents out there who speak Klingon, who are quite capable of holding down a job. No one would think twice now about a parallel universe.

I've often felt depressed; everyone feels depressed.

Give anyone a lever long enough and they can change the world. It's unreliable levers that are the problem.

I hate cats." Death's face became a little stiffer, if that were possible. The blue glow in his eye sockets flickered red for an instant. "I SEE," he said. The tone suggested that death was too good for cat haters.

Moist was sure doctors keep skeletons around to cow patients. Nyer, nyer, we know what you look underneath.

The important thing about having lots of things to remember is that you’ve got to go somewhere afterwards where you can remember them, you see? You’ve got to stop. You haven’t really been anywhere until you’ve got back home.

I could be wrong. Not being certain is what being a philosopher is all about.