It will all become clear to you when you grow up,’ he said, 'It’s an amusing idea, of course, a nice play on words. A female wizard! You might as well invent a male witch!’ 'Warlocks,’ said Esk. 'Pardon me?’ 'My granny says men can’t be witches,’ said Esk. 'She says if men tried to be witches they’d be wizards.’ 'She sounds a very wise woman,’ said Treatle. 'She says women should stick to what they’re good at,’ Esk went on. 'Very sensible of her.’ 'She says if women were as good as men they’d be a lot better.