On the Disc, the Gods aren't so much worshipped, as they are blamed.

The baby boomers are getting older, and will stay older for longer. And they will run right into the dementia firing range. How will a society cope? Especially a society that can't so readily rely on those stable family relationships that traditionally provided the backbone of care?

Granny Weatherwax was not lost. She wasn't the kind of person who ever became lost. It was just that, at the moment, while she knew exactly where SHE was, she didn't know the position of anywhere else.

Inside every lump of coal there's a diamond waiting to get out.

As far as Death was aware, the sole reason for any human association with pigs and lambs was as a prelude to chops and sausages. Quite why they should dress up for children’s wallpaper as well was a mystery. Hello, little folk, this is what you’re going to eat… He felt that if only he could find the key to it, he’d know a lot more about human beings.

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

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.