When people say "clearly" something that means there's a huge crack in their argument and they know things aren't clear at all.

Fantasy is an exercise bicycle for the mind. It might not take you anywhere, but it tones up the muscles that can.

Priests were metal-reinforced overshoes. They saved your soles. This is an Assassin joke.

Little fussy Otto, in his red-lined black opera cloak with pockets for all his gear, his shiny black shoes, his carefully cut widow's peak and, not least, his ridiculous accent that grew thicker or thinner depending on who he was talking to, did not look like a threat. He looked funny, a joke, a music-hall vampire. It had never previously occurred to Vimes that, just possibly, the joke was on other people.

Any true wizard, faced with a sign like 'Do not open this door. Really. We mean it. We're not kidding. Opening this door will mean the end of the universe,' would automatically open the door in order to see what all the fuss is about. This made signs rather a waste of time, but at least it meant that when you handed what was left of the wizard to his grieving relatives you could say, as they grasped the jar, 'We told him not to."

Correct observation followed by meticulous deduction and the precise visualization of goals is vital to the success of any enterprise.

And the new day was a great big fish.