I used to think that I was stupid, and then I met philosophers.

My name is immaterial,' she said. That's a pretty name,' said Rincewind.

Every procedure for getting a cat to take a pill works fine - once. Like the Borg, they learn.

Probably the last man who knew how it worked had been tortured to death years before. Or as soon as it was installed. Killing the creator was a traditional method of patent-protection.

Picture a tall, dark figure, surrounded by cornfields... NO, YOU CAN'T RIDE A CAT. WHO EVER HEARD OF THE DEATH OF RATS RIDING A CAT? THE DEATH OF RATS WOULD RIDE SOME KIND OF DOG. Picture more fields, a great horizon-spanning network of fields, rolling in gentle waves... DON'T ASK ME I DON'T KNOW. SOME KIND OF TERRIER, MAYBE. ...fields of corn, alive, whispering in the breeze... RIGHT, AND THE DEATH OF FLEAS CAN RIDE IT TOO. THAT WAY YOU KILL TWO BIRDS WITH ONE STONE. ...awaiting the clockwork of the seasons. METAPHORICALLY.

Never trust any complicated cocktail that remains perfectly clear until the last ingredient goes in, and then immediately clouds.

They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.