“Building a temple didn't mean you believed in gods, it just meant you believed in architecture.”

“But I don't believe in reincarnation!" he protested.SQUEAK.And this, Mr Pounder understood with absolute rodent clarity, meant: reincarnation believes in you.”

“Why not? If enough people believe, you can be god of anything…”

“I don't hold with paddlin' with the occult," said Granny firmly. "Once you start paddlin' with the occult you start believing in spirits, and when you start believing in spirits you start believing in demons, and then before you know where you are you're believing in gods. And then you're in trouble.""But all them things exist," said Nanny Ogg."That's no call to go around believing in them. It only encourages 'em.”

“People needed to believe in gods, if only because it was so hard to believe in people.”

“...either the gods are there whether you believe or not, or exist only as a function of the belief, so either way you might as well ignore the whole business...”

“Most witches don’t believe in gods. They know that the gods exist, of course. They even deal with them occasionally. But they don’t believe in them. They know them too well. It would be like believing in the postman.”