Terry Pratchett - Equal Rites

‘They say that a little knowledge is a dangerous thing, but it is not one half so bad as a lot of ignorance.’ Everybody knows there’s no such thing as a female wizard. So when the wizard Drum Billet accidentally passes on his staff of power to an eighth daughter of an eighth son, a girl called Eskarina (Esk, for short), the misogynistic world of wizardry wants nothing to do with her.