Wyrd Sisters (Discworld)

The universe, they said, depended for its operation on the balance of four forces which they identified as charm, persuasion, uncertainty and bloody-mindedness. Thus it was that the sun and moon orbited the Disc because they were persuaded not to fall down, but didn’t actually fly away because of uncertainty. Charm allowed trees to grow and bloody-

sometimes I get the feeling that the Luggage knows exactly what it’s doing.’

from a universe where things are less as they are and more like people imagine them to be,