" Mistress Weatherwax is the head witch, then, is she?’
'Oh no!’ said Miss Level, looking shocked. 'Witches are all equal. We don’t have things like head witches. That’s quite against the spirit of witchcraft.’
'Oh, I see,’ said Tiffany.
'Besides,’ Miss Level added, 'Mistress Weatherwax would never allow that sort of thing. "

― Terry Pratchett , A Hat Full of Sky (Discworld, #32; Tiffany Aching, #2)