The disc, being flat, has no real horizon. Any adventurous sailor who got funny ideas from staring at eggs and oranges for too long and set out for the antipodes soon learned that the reason why distant ships sometimes looked as though they were disappearing over the edge of the world was that they were disappearing over the edge of the world.

A Thaum is the basic unit of magical strength. It has been universally established as the amount of magic needed to create one small white pigeon or three normal-sized billiard balls.

His parents called him Youngster. They did this in the subconcious hope that he might take the hint. Wensleydale gave the impression of having been born with a mental age of 47.

You have the effrontery to be squeamish, it thought at him. But we were dragons. We were supposed to be cruel, cunning, heartless and terrible. But this much I can tell you, you ape – the great face pressed even closer, so that Wonse was staring into the pitiless depths of his eyes – we never burned and tortured and ripped one another apart and called it morality.

Up until now I'd always though RSI meant 'I hate my damn job'.

Of course, like all the informal inhabitants of the University the roaches were a little unusual, but there was something particularly unpleasant about the sound of billions of very small feet hitting the stones in perfect time. Rincewind stepped gingerly over the marching column. The Librarian jumped it. The Luggage, of course, followed them with a noise like someone tapdancing over a bag of crisps.

Always remember that the crowd that applauds your coronation is the same crowd that will applaud your beheading. People like a show.